Match Application Number Document Title
1 85102295 Method for preparing basic aluminium chloride (polyaluminuim chloride) from alu...
The product is widely used as flocculant for water treatment. Aluminite powder is calcined and activated, and then mixed with sulfuic acid and fluoride additive in a definite ratio. The ...
2 85100148 Extraction for producing fluorescene grade lanthanum oxide
The extractant is an acidic group of phosphorus P507 or P504. The purificn. is accomplished through fractional extn. and selective back extn.. The mathematical patterns of distribution r...
3 85100161 Carbonation process (CO2 Process) for producing pseudoboehmite
The main technical characteristic of the present invention is a combination use of soda-lime sintering process in production of alumina, By using the intermediate product, namely commerc...
4 85102476 Mfg. method of aluminium hydroxide used as filler and fire retardant
The product produced by the method is of high purity, less offending impurities, whiteness and suitable granularity, hardness, friction and good fire retarding properties. It can be used...
5 85102281 Method of making low-sodium 2-alumina of superfine grains
Modern industry requiries smaller and smaller crytal grains of alumina for makeing ceramic products to be used for precision works, and it is difficult to fulfill these requirements by u...
6 85101611 Separation of high purity dysprosium oxide and holmium oxide by extraction chro...
The present invention is a chromatographic method for rare earth separation, in which P507 extraction elution resin is taken as column packing for separation of holmium oxide and dyspros...
7 85100218 Method for preparing alumina by hydrolysis of low carbon aluminum alkoxide
Low carbon aluminum alkoxide used by this method is hydrolyzed and aged, and the associated aq. low carbon alcohol is hydrolyzed with low carbon aluminum alkoxide. While alumina is obtd....
8 85102529 Collecting rare-earth from ion type rare-earth ore and the process for its comp...
Based on the peculiarity of ion type rare-earth ore, in the process of this invention, extraction of rare-earth, separation of the crude tailings and elimination of aluminium are carried...
9 85102210 Process for seperation of mixed rare-earths by ammoniated HEH (EHP)
The solvent extractive group separation of ion-adsorbing rare earth ores comprising mainly light rare-earths, by ammoniated EHEHPA is one of hydrometallurgy solvent extraction processes....
10 85101885 Separation of mixed rare-earth elements by extraction
In this invention, mono-2-ethylhexyl (2-ethylhexyl phosphate) is used as extraction solvent multistage solvent extraction is adopted, first to separate erbium and thulium so as to divide...
11 85101687 Equipments and method for continuous calcination of aluminium hydroxide
It is for calcining aluminium hydroxide into alumina with controllable amount of very low to very high content of alpha-alumina. The calcination is proceeded with two steps. Raw material...
12 85101652 Liquid-liquid extraction process for separating rare-earth elements
The invention relates to a process for separating rare-earth elements. The process is rearlized by contacting liq. phase of rare-earth nitrate and organic phase of organic hypo-phosphini...
13 85100219 Method for removing impurities from alumina sol obtained by using low purity al...
A method is invented to refine alumina sol by adding into the sol fresh aluminum of purity of 98 to 99.9 wt.% or aluminum of purity of 99.93 to 99.99 wt.%. Mechanical method is used to r...
14 85102273 Producing anhydrous magnesium chloride from magnesite spherules
The method can be described as following: preparation of material, during which the material is calcined at a temperature ranging from 750 to 800 deg.C, mixing and making the calcined ma...
15 85102270 Separating yttrium by solvent extracting and preparation of low-yttrium mixed r...
A process for separation of yttrium and preparation of rare-earths mixture at low content of yttrium is disclosed, where-in naphthenic acid-ammonium naphthenate-aliphatic alcohol-kerosen...
16 85102248 Grouping rare earth and richening terbium by solvent extracting
The present invention concerns a multistage fractional extraction process of two steps according to the hydrometallurgical liquid-liquid extraction technology, in which the chlorides of ...
17 85102244 Phosphonates LLE separation of rare earth elements
Er, Dy, La, Ce, Pr and Na is produced from the ionic rare earth minerals. Owing to the promoting of volume and separation factors of extraction of the rare earth elements and the decreas...
18 85102220 High purity yttrium obtained by solvent extraction
Naphthenic acid is proposed as extracting agent, and naphthenic acid-ammonium naphthenate-aliphatic alcohol-kerosine is the extracting organic phase. Yttrium can thus be separated in hig...
19 85102276 Method of making sandy alumina from refined solution of sintering process
This invention presents a new process for making sandy alumina, featuring a new carbonation decomposition and a seeding-stirring decomposition step, which enables one to obtain high stre...
20 85100247 Preparation of bivalent europium activated barium fluochloride by carbon reduct...
The present invention relater to carbon reduction method to prepare barium fluochloride activated by bivalent europium (BaFCl:Eu2 )-a X-ray actinic material. This method is simple in pro...
21 85103821 Method of increasing whiteness of low density calcium carbonate
While the slaking of lime proceeds at 60-95 deg.C, hydrazine hydrate or sodium hydrosulfate, 0.05-0.5%, and triethanolamine 0.05-0.5% (on the basis of lime) are added, admixed, and then ...
22 85103081 Denitrating process for production of metallic oxide
The process is controlled by specific surface and reactive activity. These oxides are then converted with the method of heated treatment of corresponding nitrates. The form of nitrates i...
23 85103386 Highly effective and impervious reinforcing agent used for mortar or concret
To existing water proofing agent such as ferric chloride is added calcium sulphate and zeolite. The purpose of adding calcium sulphate is to react with calcium aluminate in concrete to p...
24 85101874 Separation and extraction of high purity thulium oxide and lutecium oxide by ch...
This invention concerns the chromatographic separation of elements and can be used to produce thulium oxide and lutecium oxide of high purity on industrial scale. The production period i...
25 85105213 Prodn. sandy aluminium hydroxide
The present invention solves two problems, i.e., the decomposing rate for producing sand-like aluminium from the seedling separation in combined or sintering method is low, and carboniza...
26 85105220 Method of making magnesia for Si-steel manufactare
This invention has solved the problem of making magnesia as isolating coat of silicium steel anneal, conventionally magnesia is made with carbonated ammonia liquor, due to its specific v...
27 85103759 Method for preparing alkaline aluminium chloride
The present invention relates to a process for production of alkaline aluminium chloride used as starting materials of cleaners, sizing agents, pharmaceuticals and cosmetics. In prior pr...
28 85103681 Prevention of scale formation in tubes of waporator in the production of alumin...
During the evaporation of mother liquor in which all three kinds of impurities, Na2CO3, Na2SO4 and SiO2 exist in significant amounts, scale is likely to form on the wall of heaing tubes ...
29 85105494 Purification of solutions of sodium aluminate in the bayer cycle by the removal...
A process for purifying at least a fraction of a solution in the Bayer cycle, which is preferably taken off after decomposition of the sodium aluminate, before or after concentration ther...
30 85105290 Method of processing sodium oxalate formed during the digestion of bauxite
The sodium oxalate is obtd. from the separation step after the extraction of bauxide by Bayer process. The chemical reagents which used in the digestion process may be recovered. The met...
31 85105315 Method for the prepn. of feeding prade calcium phosphate
It is from calcium phosphate and milk of lime. In the commercial perphosphate an adequate amount of 8.5-10.5% milk of lime is added for the purpose of proceeding defluorination reaction....
32 85105628 Nonpoisonous treatment extraction Ca. and Mg. method utilizing chromium particl...
Chromium slag is extracted by HCl, reducing agent is added to reduce Cr 6 to Cr , and then, from the ertract, calcium and magnesium are recovered, so as to comprehensively utilize the ...
33 85107743 Hydrochloric acid recycle process for manufacturing barium sulphate and magnesi...
Magnesium sulphat and barite are used as raw materials, being cheaper than using commercial barium sulphate. Barium sulphate satisfactory for pharmaceutical use is obtained. The problem ...
34 85107358 Method for preparation polyhydroxy aluminium-chloride from coal waste rock
The present invention is characterized in that the coal waste rock is calcined and leached by chlorhydric acid. The basicity of leaching liquid is regulated by powder of the same calcine...
35 85107051 Process for continuously producing alumina using bayer process from 1 hydrate b...
A process for the continuous production of alumina by means of the Bayer process by alkaline attack in reactors on bauxites which primarily consist of aluminum monohydrates and contain si...
36 85106015 Mixed rare earth of lanthanum and cerium
The prior mixed rare earth product contains predominantly lanthanum, cerium, praseidymium and neodymium,so that not only the resource of Pr and Nd goes to waste, but the effect for appli...
37 85108510 Production of pigment from barite
This invention consists of the processing excellent pigment using powder of barite directly with simple technique, which differs from the conventional process of precipitating with bariu...
38 85108237 Process for effecting seeding in two phases for producing large-grain alumina
The invention concerns a process for the precipitation of aluminium hydroxide by seeding in two phases, which is intended to produce at a high level of productivity alumina with large gra...
39 85108251 Method and apparatus for alumina prepn. by decomposing sodium aluminate solutio...
A method and apparatus for decomposing a sodium aluminate liquor supersaturated with alumina, obtained from alkaline action on bauxite by the Bayer process, is initiated by introduction o...
40 86100806 Technology of simultaneous production of alum and aluminum oxide from alums tone
In this invention, high temp. (650-1100 deg.C, and high (speed residence time 0.1-600 seconds) are adopted to dehydrate the alumstone by calcination. Under the condition that the dehydra...
41 86100671 Precipitating rare-earth by using ammonium bicarbonate
This invention relales to a process of precipitating and separating rare-earth compound from rare-earth fluid by using the ammonium bicarbonate as precipitent. It is suitable for rare-ea...
42 86100391 Nd-Si purple ceramic pigment
This pigment belongs in the ceramic decoration field in silicate. Nd-Si purple ceramic pigment is a new type of ceramic pigment. This pigment is firstly developed at home. There are two...
43 85109376 Purification of BAYER process liquors
Bayer process liquors derived from the digestion of bauxites with a caustic solution are purified by removing at least a portion of the organic impurities present in the liquors. Removal ...
44 86103403 New process of extracting rare earth metal from rare earth ore
This invention relates to a wet metallurgy technology. It is characterized in the fractionation of raw rare earth ore with the first mechanical sorter and then the obtained ore is transf...
45 86102989 Production of alumina from gibbsite-bearing bauxite of low reactive silica cont...
Process for the low-temperature treatment according to the Bayer cycle of gibbsite-bearing bauxite of low reative silica content, involving desilication of the said bauxite before leachin...
46 86102252 Alpha alumina production in a steam-fluidized reactor
A process for transforming alumina hydrate into an anhydrous product comprising at least 10% by weight of alpha alumina. Alumina hydrate is dehydrated, heated and transferred to a reactor...
47 86100720 Extraction of iron from aluminium sulfate solution with tertiary amine
This invention relates to a novel method in the field of inorganic salt preparation. In the present invention, 2.5-35% (by volume) tertiary amine is used as extracting agent 2.5-15% (by ...
48 86104199 Technologic process for complete separation of mixed rare earth elements
This invention relates to a combined technology of solvent-extraction and extraction-chromatographic separation. By using P507-hydrochloric acid separation system the complete separation...
49 86104039 Red mud separating technique in process of aluminum oxide preparation
The technological technique for subsiding separated red mud is used in the process of aluminium oxide producing by the sintering method. The composite flocculant of red mud is a composit...
50 86101311 Technology for extracting rubidium and caesium from magmatic rock or weathering...
The main technology is that the solution of ammonium sulphate or sodium chroide is used to extract mother liquor of rare-earth elements, scandium, rubidium and caesium. In extraction of ...
51 86104187 Method of making beta-alumina
A86104225
52 86105591 Production technology of light magnesium carbonate with ammoium hydrocabonate
This invention uses magnesium chloride as raw material. The light magnesium carbonate is obtained through depositing, processing, filtering, washing, drying, grinding and sieving.
53 86105830 The new technologies of producing aluminium oxide from flyash and cement calcin...
This invention suggests to the high alumina flyash produced in power plant mixed with 50-60% limestone used in Portland cement manufacture as raw material, and then burned in kiln to pro...
54 86104840 Recovery of calcium chloride from waste liquid of
The aim of this invention is to solve the problem of calcium chloride effluent of the technology of hydrochloric acid decomposition of phosphate ore and liquid-liquid extraction using or...
55 86104367 Making pptd. barium sulfate by smelting process
In the said process potassium chloride or sodium chloride is used as flux and is well mixed with barite powder according to a definite ratio. The mixture is then preheated to be smelted,...
56 86105875 Noval technology in the production of high grade barium chloride
This invention deals with a method of producing barium chloride, in which the step of acidification with hydrochloric acid or that of chlorination with chlorine gas, as well as the subse...
57 86105678 Method of producing chlorinated bi-aluminum, a de-fluorine agent
This invention belongs to a productive method of chemical engineering. It makes use of industrial aluminum ash or aluminum scrap, or mineral rich-in-aluminum to produce chlorinated bi-al...
58 86105794 Method for producing magnesium sulfoate fertilizer from the raw material of mag...
In this invention, the mild-heated magnesium oxide made from magnetsite by calcination reacting with sulfuric acid of appropriate concentration and get monohydrated magnesium sulfate dir...
59 86105577 New technique producing deposited barium sulphate by salt-melting
The ore powder of barite and flux of sodium chloride are mixed according to a proportion, then the mixture is smelted and the impurities are removed. The colled blocks are broken, dissol...
60 86105892 Process for treatment of rare earth metals ores
Rare earth hydroxides are recovered from the rare earth ores, by treating the ore with an aqueous solution of an alkali metal hydroxide, under agitation and essentially constant pressure,...
61 86105862 Process for treatment of rare earth metals
A method of treating an ore containing lanthanides and yttrium, including a first stage comprising grinding the ore, followed by a second stage comprising reacting the ground ore with a c...
62 86105927 Gas-tight sintered translucent aluminium oxide
The invention relates to gas-tight sintered translucent aluminum oxide having a density of at least 99.5%, which contains at most 100 ppm by weight of MgO. According to the invention, the...
63 86105321 Recovery method of sodium aluminate in the red earth
Sodium aluminate is recovered in the form of cryolite and chiolite from a liquor that has been used to soak the red mud resulting from action on bauxite in the Bayer process, by reacting ...
64 86102539 Method of making light magnesium carbonate without waste liquor
This invention provides a method of making light magnesium carbonate without waste liguor by using light magnesium oxide as the raw material. Said process is characterized by decomposing...
65 86106423 Production method of synthetic carnallite
This invention disclosesa synthetic method of carnallite by the reaction of magnessium chloride and potassium chloride including the desulfurization of magnessium chloride and concentrat...
66 86106797 Pressure elution process of ion type RE crude ore and its apparatus
This invention relates to a pressure elution process and its appt. in use for ion type RE crude ores. There is thick layer of RE crude ore inside elutriafor. In which, under pressure con...
67 86106054 Process of the production of aluminium oxide by using lime-bayer treament-water...
This process belongs to the production technique of aluminium hydroxide or aluminium oxide. Its main technic characteristic is that SiO2 contained in the ore is also added with a corresp...
68 87100005 Calcium Hypochlorite process
The present invention proposes a kind of production procedure of calcium hypochlorite made from calcium hydroxide and chlorine gas in the presence of sodium hydroxide and Ca (OCL)2.2Ca (...
69 86108135 Separation of rare-earth element dysprosium by liquid-liquid extraction separat...
Separating dysprosium is from its eneriched substance, taking ammoniated HEH (EHP) (2-ethylhexyl phosphonate ester of mono is "2-ethyl-hexyl") as extractant. A purity of is great than 99...
70 86107925 Comprehensive utilization process of oil shale
The comprehensive utilization process of oil shale is a method of slag treatment. Oil shale is used as fuel for fluidized-bed boiler to supply heat. Cinder is treated by acid leaching, a...
71 86107455 Grouping separation purifying gadolinium with solvent extraction
This invention is a process of grouping separation purifying gadolinium with ammoniation HEH (EHP) solvent extraction. It uses 1-1.7 M HEH (EHP)-kerosene of 20-45% ammoniation degree, cl...
72 87101802 Method of increasing vapourization efficiency in alumina production
The method is about rapouring technique in the alumina production. As liquid contained detrimental impurity of Na2CO3, Na2So4 and SiO2 is vapourised, vapourer with extenal boiling forced...
73 87100989 Method for purifying barium ester
Purified barium salts essentially devoid of strontium impurities, e.g., highly pure barium carbonate, are produced by liquid/liquid extracting an aqueous solution of impure barium values ...
74 87100845 Production of anhydrous chlorides of rase earth elements and the electrolysis t...
This invention concerns a process of preparing aulydrous chlorides of rare earth metals and the metals therefrom by an electrolytic method. Instant dehydration of crystalline hydrated ch...
75 87101034 Recovering scandium from titanium-iron ore
The invention is extraction method of metallic scandium oxide. In liquid decomposed out titanium with 5-8 MOL H2SO4 acidity from 5-20mg/l Sc content titanium iron ore, through 0.5 MP204 ...
76 87103009 Process for making complex poly-aluminium chloride
The present invention is about the process for making a water purifying agent, complex poly-alaminium chloride. The process is characterized by extracting bauxite powder with an acid, ad...
77 87101822 Complete-separation process of rare-earth elements from medium-gadolinium and r...
The said process of the presnt invention relates to the field of hydrometallurgy, wherein the conditions are controlled as follows, the saponification-number of the naphthenic acid is 0....
78 87104108 Method for producing barium carbonate
This invention relates to the method of producing high purity barium carbonate using barium sulfide and commercial ammonium bicarbonate as raw waterials. After the addition of the circul...
79 87103820 Prodn. process of powdery alum
The mud containing hot alum solution from the process for making alum from alunite or the hot alum solution made by hot dissolution of granular alum in water is poured into vessels shiel...
80 87103497 Process and apparatus for production alumina from decomposition sodium aluminat...
A process and an apparatus for the continuous decoposition of a supersaturated sodium aluminate liquor forming a suspension in the presence of aluminium trihydroxide seed characterised by...
81 87101379 Process for producing sandy alumina through continuous stirring and decompositi...
The aim of this invention is to provide a commercial prodn. process by use of continuous stirring and decomposition of seed in the refined liquor of sintered sodium aluminate. The said p...
82 87101381 Continuous desiliconizing process of crude liquor of sodium aluminate by indire...
The said invention belongs to a desiliconizing process for crude liquor of sodium aluminate during producing alumina by soda-lime sintering process. It is aimed to provide a continuous d...
83 87104732 Method for processing bauxite into alumina
A method for producing alumina from bauxite comprises: bauxite into alumina, grinding bauxite with molar ratio CaO : TiO2=0.7-2.0 in the presence of additive containing calcium; raising...
84 87104559 Method for production of strontium salt using strontianite
This invention offers a method for production of strontium salt using strontianite. The specific feature of the method is that the strontianite is cracked by a physical-chemical reaction...
85 87106229 Method for producing substantially pure alumina material
A method for producing an alumina of high purity, which comprises forming an oxidation reaction product of an aluminum parent metal and an oxygen-containing vapor-phase oxidant, comminuti...
86 87106162 Method for producing light magnisium carbonate using dolomite as raw material
This invention relates to a method of prodn. of light magnisium carbonate using dolomite as raw material by carbonation process. By using the said method, the consumption of carbon dio...
87 87101380 Process for producing sandish aluminium oxide by carbonating decomposition
This invention is aimed at providing a process which is imple in technology and suitable for industry application to produce sandish aluminium oxide by carbonating decomposition in soda-...
88 87107838 Method and apparatus to produce hot fluidizing gas
A fluid bed reactor for treatment of refractory materials with a hot fluidizing gas and a method to use same. Both the refractory materials and the fluidizing gas are introduced from the ...
89 87106845 Method for preparing metallic yttrium
This invention is a method for preparing metal yttrium. It uses the ternary fused-salt system of yttrium fluoride, lithium fluoride and barium fluoride, and the electrolytic eutectoid me...
90 87106846 Fractional-distillation extraction of yttrium oxide
This invention is a fractional-distillation extraction of yttrium oxide. A rare-earth chloride is used as raw material. Without adding any additive in it, a binary extraction system of n...
91 87105087 Process for producing flocculant of polymeric aluminium chloride
This invention is a method for producing the flocculent of polymeric aluminium chloride. In the method, the waste hydrochloric acid containing aluminium, which is exhausted during the in...
92 87107972 Rare-earth separating method with multiple outlets by one step extraction
This invention is an extraction and separation technology for rare-earth elements in hydro-metallurgy. It uses an extractant (2-ethylhexyl), phosphate monoester (2-ethylhexyl) solution o...
93 87105119 Extracting method of magnesium-type of adsorbents
An extracting method of magnesium-type adsorbents, which uses magnesite, dolomite, magnesite flooring and light precipitated magnesium carbonate as raw materials via directly heating to ...
94 87107380 Desulfurization of gypsum
A pelletized mixture of gypsum, carbonaceous material and pyrite is charged to a travelling grate where the charge is heated under suitable conditions to produce a solid sintered material...
95 87106995 Method of prepg. aluminium hydroxide
The process for prepg. aluminium hydroxide is mainly to mix the aluminate soln. with the seed crystal of aluminium hydroxide. The mixing temp. is maintained at 60-85 deg. C and the quant...
96 87101234 Process for producing strontium carbonate by calcination
Strontium carbonate is an inorganic carbonas, which is widely used in light industry, chemical industry, national defence and electronic industry. It is produced mostly by using strontia...
97 87108130 Chlorination of metallurgical composites
Metal values are recovered as chlorides from minerals containing titanium, zirconium and/or magnesium, for example ilmenite, rutile, zircon and magnesite, by forming a composite mixture o...
98 87108136 Method of extracting scandium oxide from man-made rutile
The present invention provides an extraction method of scandium oxide from artificial rutile. The scandium can be effectively separated and recovered from the peracid pertitanium acid le...
99 87101461 Process for extraction of alumina from powder coal ash with formation of gelmat...
This invention uses powder coal ash as raw material and mixes it with lime. After steaming and calcination at lower temp., alumina is extracted with soda solution, simultaneously with fo...
100 88100206 Process for preparation of light magnesia by leaching magnesite with ammonium s...
In this invention magnesia is leached out from magnesite feedstock with aq. ammonium salts solution and converted to soluble magnesium salts dissolved into solution (I), resulting in sep...
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