Match Application Number Document Title
1 85101021 Process for producing high grade sodium chloride
This invention relates to a method of increasing the purity of salts, especially sodium chloride. The salt is obtained by evaporating the said salt solution containing impurities and cry...
2 85100516 Manufacture technology of upgraded ammonium bicarbonate by phosphate addition
Magnesium oxide derived from caleination of marble in ground to fine powder, than mixed with granulous ammonium phosphate and ammonium bicarbonate, formimg magnesium-ammonium phosplate h...
3 85100373 Process for producing refined salt and Na2SO4 with oresalt dissolved halogen
This invention is related to the producetion of refined salt and Na2SO4 using mineral salt artificial brine contained 15-40g/l Na2SO4 and 270-290 g/l NaCl.The mother solution, with calci...
4 85102466 Combination process for continuous production of sodium carbonate and ammonium ...
The characteristic of this process is using ammonium bicarbonate and sodium chloride as raw materials, and adding to the reaction liquor an intermediate salt, which promotes the separati...
5 85103946 Method and equipment for preparing high concn. alkali
Aq. alkali. is conc. under high tamp. and high pressure. Then the conc. alkali. is subjected to low pressure, lower than ambient pressure. The pressure dectease between high pressure ves...
6 85104005 Dry process for neutralizing potassium sulfate produced from potassium chloride...
The process contains to add at least a kind of powder neutralizer to the reaction product of KCl and H2So4. the neutralizer is selected from a group of Ca(OH)2, Cao, CaCO3, Mg(OH)2, Mgo ...
7 85103968 Granular potassium sulfate and process for producing same
This invention provides a process used for high granular formation of potassium sulfate by pressing and in accordance with this process to produce fine granular of the same. During using...
8 85101989 Technology for preparation of Li2CO3 by treating lithium-loaded mica with K2SO4
This invention concerns mainly the method of obtaining Li and recovering K, Na, Al, Si, Ru, and Cs, from lithiumloaded mica. Lithium-loaded mica is mixed with K2SO4 and roasted. Then a f...
9 85106099 Process for producing water-insoluble nitrogenous organic base
Process for the production of a water-insoluble nitrogenous organic base, starting from a water-soluble hydrochloride of the said base, according to which the hydrochloride is treated wi...
10 85105969 Process for preparing organic base from aqueous solution of alkali metal bicarb...
The solution is treated with a complement of the base hydrochloride, and the resultant liquid is treated with a basic agent capable of decomposing the hydrochloride. The invention is app...
11 85105345 Two stage propagation-type carbonation combined soda process
The characteristic of the process is that carbon dioxide and ammonium bicarbonate are used as feed materials in carbonation process. It is a two stage propagation-type carbonating proces...
12 85104852 Process for regenerating an organic solution of a water-insoluble nitrogenous o...
The method comprises following steps: base hydrochloride solution is treated by carbonate of alkaline earth metal in the presence of water, then the regenerated organic solution of nitro...
13 86100688 Process for mfg. dense anhydrous sodium carbonate
Process for manufacturing dense anhydrous sodium carbonate, according to which light anhydrous sodium carbonate (2) is added to an aqueous sodium carbonate solution (6) and the resulting ...
14 85109534 Method for removing lead from bittern by precipitation with lime
Lime is used as the main precipitant, which is added in an amount to raise PH of the biltern to 8-10. Magnesium salt or flocculant may be added also. Lead is removed by adding of the pre...
15 85108727 Process for preparation of dense soda ash
A process for producing dense soda ash consists of hot decomposition of the sodium bicarbonate existing in the sodium carbonate slurry at a decomposition temperature of over 135 deg.C, a...
16 85106832 Process for producing nitrates by soda solution jet-absorbing NOx
Nitrogen monoxide-bearing gas from ammonia oxidation converter, after going through a waste heat boiler and then an oxidation tower (degree of oxdation of No up to 30-50%), is treated in...
17 86101635 Simultaneous prodn. of potassium nitrate and ammonium chloride
This invention refers to the simultaneous prodn. of potassium nitrate and ammonium chloride through the reaction of ammonium nitrate and potassium chioride. It takes advantage of the com...
18 86101430 Method of drawing out cyanogen ion from engine ashes containing potassium
This invention describes a method of drawing out cyanogen ion from engine ashes containing potassium, the aim is that when white cement is produced by blast furnace method with potassium...
19 86101220 Process for purifying solution of potassium carbonate
This invention deals with a high efficiency purification method of potassium carbonate solution, which separates potassium carbonate out from solution containing sodium, chlorine etc. im...
20 86104760 Mfr. of sodium carbonate by solvent extraction
The present invention relates to a method for making sodium carbonate from natural mineral sodium bicarbonate. It consists of following steps:(a)subjecting aqueous caustic to contact wit...
21 86104240 Technology of purifying the sodium carbonate from natural soda-salt mineral
The technology is solving the soda mineral at 60 deg.C clearing up and removing the impurities by hydrodynamically, spray-cooling and crystallization, removing bound water by spray-dryin...
22 86104368 Process for preparation of potassium salts from pulping of lignocellulosic mate...
Described herein is a process for producing potassium salts from potassium-based liquors for pulping of lignocellulosic material. The process comprises the steps of (a) digesting lignocel...
23 86108860 Production of sodium nitrate
The present invention is based on the characteristic of hot concentrated ammonium alum solution that it does not crystallize under the conditions of being shielded from light and left st...
24 86106693 Method for self-return of soda and its apparatus
This invention is a method for self-return of soda and its apparatus, and suitable for production of sodium carbonate. The characteristic is making use of the coiled pipe around the outs...
25 86104945 Production method of hydroxides, thiosulfates, sulfates and sulfur
This invention proposed a method of producing hydroxide and thiosulfate or sulfate and sulfur by using the aqueous solution of a sulfide as the raw material in the presence of oxygen or ...
26 86104762 Mfr. of sodium carbonate from dry-exploited ore
A method is disclosed for the nfr. of sodicm carbonate from natural mineral sodium bicarbonate by following steps: (a) calcining the dry-exploited sodium bicarbonate ore to form raw sodi...
27 86107909 Salt and pure soda combine production method
Combine production method of salt and pure soda belongs to a comprehensive utilization of brine, sea water and waste soda solution. Production of an ammonia-soda plant is combined with t...
28 86107882 Improved double decomposition process for producing sodium nitrate
The present invention is related to an improved technological process for producing sodium nitrate by the double decomposition of calcium nitrate and sodium sulfate. It is characterized ...
29 86106750 Sodium nitrite produced by isothermal absorption of nitrogen oxide
This invention relates to a method in which gas contained nitrogen oxide being able to be absorbed in the Na2CO3 or NaOH alkaline solution is used to make NaNO2. The gas contained nitrop...
30 86106394 Process for preparing potassium nitrate
This invented process is developed on the basis of the characteristic that super-saturated solution of potassium alum would not crystallize out, if the mentioned solution were protected ...
31 87100553 Combination process of producing boric acid and sodium nitrate from sodium bara...
A process for producing boric acid and sodium nitrate simultaneously by the acid hydrolysis reaction of sodium borate with nitric acid is described in the present invention. Borax or pol...
32 87100309 Preparation method of caustic soda from sodium bicarbonate
The present invention is a new technology of causticization soda preparation method. The feature of the said method is that salt and ammonium hydrogencarbonate are used as raw materials ...
33 87100251 Production of sodium nitrate
This invention uses sodium bicarbonate and ammonium nitrats as reactants to produce Na-nitrate by heating. The by-products, ammonia and carbon dioxide, are recovered and reused. The prod...
34 86108737 Process for preparation of aqueous solution of sodium chloride
According to the process, an aqueous solution containing dissolved sodium bicarbonate (33) is treated with an immiscible organic liquid (4 ) comprising a water-insoluble nitrogenous organ...
35 87103005 Carbonization tower cooled externally by natural circulation
The casbonization tower cooled externally by naturol circulation is used for producing sodium bicarbonate. it is characterized by that the reactive fluid between tower body and outside c...
36 87103218 Production technique of sodium nitrate with mirabilite
This invention is about production technique of sodium nitrate. The ore of calcium carbonate (specially calcite) with high purity and some nitric acid are reacted. The product Ca(NO3)2 r...
37 87103073 Method for producing sodium hydroxide
At present sodium hydroxide is produced by electrolysis or causticization, etc. The present invention describes a method for producing sodium hydroxide by using sodium sulphide as raw ma...
38 87101960 Technology of lighium carbonate by sulfate process
The present invention deals mainly with the advancement of the lithium carbonate production from processing lithium-mica by potassium sulfate method which is presented in Patent CN 85181...
39 87105031 Method of production of aluminium otide containing lighium
This imvention refers to preparation of aluminium oxide containing lithium, which is prepared from solution of sodium aluminate made by bauvite, lime stone and soda and lithium -contaiui...
40 87103934 Method of making schoenite or mixture of schoenite and potassium chloride
This invention relates to a method of making high grade schoenite or mixture of schoenite and potassium chloride directly from the salt lake brine of sulfate type. The potassium in the b...
41 87103876 Improvements in industrial salt production
Industrial sodium chloride of improved quality is obtained from brine containing organic contamination by a process comprising adding chlorine to the brine in the form of hypochlorite (OCl
42 87103431 Process for extracting absolute lithium chloride from brine containing chloride
This invention is related to that,by using tributyl phosphate as extractant,lithium chloride can be extracted directly from brine and the complexing agent can be used in the extractant l...
43 87105820 Process for manufacturing potassium chloride and hyponatresale from carnallite
The present invention provides the process for extracting of potassium chloride with low content of sodium salt from carnallite, which comprises controlling the carnallite size and effec...
44 87105491 Titanium steel complex plate vacuum salt making boiler apparatus
The present invention relates to the design of vacuum vapourizing chamber made of Ti-steel composite plate for salt-making and is characterized by that the Ti-steel composite plate cylin...
45 87105366 Granular potassium sulfate and process for producing the same
The invention provides a method to produce a granular K2SO4 having an extremely small powdering rate and an excellent flowability, and the granular K2SO4 obtained by the said method. Gran...
46 87104642 Producing soda by solid-phase process
This invention provides a method for soda prodn. limited within solid-phase process. It is characterized by adopting a series of new technique measures such as salt-crushing, ammonium bi...
47 87107805 Process for extraction of organic liquid containing nitrogenous organic base fr...
Extraction of an organic liquid containing a water-insoluble nitrogenous organic base from an aqueous slurry of particles of inorganic material (20), according to which an inert gas (23) ...
48 87107296 Process for separating alkali metal bicarbonate grains from a nitrogenous organ...
To separate particles of alkali metal bicarbonate (11) from a liquid film of hydrochloride of a nitrogenous organic base adsorbed at their surface they are dispersed in an aqueous bath (1...
49 87106516 Method for obtaining concentrated potassium chloride from material contained po...
The method below is for obtaining concentrated potassium chloride from potassium-containing materials: hot saturated halogenous solution is made from hot unsaturated halogenous solution,...
50 87106269 Process for producing caustic soda
The main aim of the present invention is to simplify the equipment for caustic soda production, to lower investment and production cost, and to provide a new way for caustic soda product...
51 87108249 Whitening agent for sodium carbonate
This invention deals with one kind of whitening agent used for brighten sodium carbonate, consisting of fluorescer as main ingredient, non-ionic surfactants such as alcohol and phenol e...
52 87108324 Purification method of sodium sulphate type bittern
The said method controls the technological conditions of neutralization, adjustment, carbonation and other process, and adds active crystal seeds and flocculant of proper amount, so as t...
53 88101878 Method of preparation of soft potassium-magnesium alum by solid phase reaction
This invention relates to a process of production of soft potassium-magnesium alum. Soft potassium-magnesium alum is the raw material for producing high quality chlorine-free potash fert...
54 88100861 Method to substitute silver in the alkali evaporator
The invention relates to the material selection of the alkali evaporator and the technology to reduce the corrosion of alkali evaporator due to alkali by adding composite corrosion inhib...
55 88105025 Method of making potassium sulfate
Said method uses industrial sulfuric acid or waste surfuric acid, potassium chloride and ammonia as raw materials, under the action of associating agent-alkyl tertiary amine to make the ...
56 88103072 Process for producing sodium hydroxide by sodium sulfate
The present invention belons to the prodn. method of alkali metal hydroxide. It's characterized by using sodium sulfute as raw material. In the water medium barium carbonate and calcium ...
57 88102730 Method for preparing potassium sulfate by using mixed salt and potassium chlori...
This invention is a method using the conversion of mixed salt and potassium chloride which are waste dregs from salt chemical factory to prepare potassium sulfate. The two raw materials ...
58 88102707 Comprehensive utilization method of trona
This invention refers to a comprehensive utilization method to produce caustic soda and its by-products from trona. In the past, trona is used only to produce caustic soda and Na2SO4. La...
59 88102276 Method for producing sodium nitrate
A method of producing sodium nitrate uses Glauber's salt and lime as raw material. Its characteristic is that the neutralization reaction and double decomposition are carried out simulta...
60 88104523 Method of caustic soda made by trona
The invention uses trona and lime as material to produce caustic soda. The procedure includes preparing lime white, causticizing, settling, cold-removing salt and boiling. The quality of...
61 88104325 Method of producing potassium salts using tobacco vein as raw material
A kind of method to produce potassium salts using tobacco vein as raw material. Use the waste tobacco vein extracted from the tobacco processing, turn it into ash, soak it with water and...
62 88103721 Production of caustic soda via conversion of sodium chloride
This invention provides a commercial non-electrolytic method of direct conversion of the salt solution into caustic soda solution. Lead monoxide which is used as the converting agent car...
63 88103389 Prepn. of high grade picromerite by cold/hot process
The climatic of characteristic in salt lake district is considerable difference of daily temp. and long low-temp. period yearly, which is utilized in this invention. The picromerite can ...
64 88105345 Preparation for whitening sodium sulfate
This invention is a preparation used for whitening sodium sulfate and belongs to the technical field of sulfate production. It is a combined material for whitening processing in which fl...
65 88105115 Method of production of potassium nitrate
This invention covers a method for production of potassium nitrate, which comprises producing potassium nitrate during the reaction of nitric acid (or used nitric acid) with potassium ch...
66 88104763 Cyctic method for producing caustic soda
In this production method of caustic soda, calcium carbonate (including its products, calcium oxide and calcium hydroxide), sodium sulfate and water are used as its raw materials and the...
67 88109720 Combined technology for producing caustic potash
This combined process can be divided into two kinds, one usin barium sulfide and another not using. With the former, barium sulfate can be obtained at same time by deposition. Compared w...
68 88109692 Method for production of caustic soda
The method for production of caustic soda utilizes the low quality natural soda, containing more than 30% sodium chloride and sodium sulfate. The mother liquor obtained after clarificati...
69 88109678 Combination process for producing caustic soda
A combined process for preparing caustic so da, which has low cost as compared with the known art, can be used for producing spontaneously precipitating barium sulphate and hydrochloric ...
70 88105819 Water dissolving exploit technology for mining glauberite
This technology features that the mixed salt of glauberite is decomposed at a temp. below 17 deg.C into Na2SO4.10H2O, that is then dissolved under the condition of raising temp. to obtai...
71 88109756 Process for producing caustic sode by compound causticization
In this invention, sodium sulfate or carbonate and lime are used as raw materials, and two or more causticizations are included. The precipitate in reaction and extracted liquor are used...
72 89105351 Process for prodn. of magnesium sulphate, sodium chloride and potassium chloride
This invention covers a technology for the production of magnesium sulfate, sodium chloride and potassium chloride. The said process is based on brine blending combined with heating, set...
73 88108648 Technological routine for converting mirabilite into caustic soda
This invention especially relates to a process for preparing NaOH. In this process, two-pass carbonization is used, that is mirabilite and coal are first carbonized into Na2S by calcinat...
74 89101305 Improved preparation process of sodium hydroxide with causticization
In this invention, sodium carbonate, or heavy soda, or trona with higher quality and quicklime are used as raw materials. Going through such processes as pretreatment of raw materials an...
75 89105238 Optimizing combination process for producing caustic soda
This process includes four cyclic steps: producing sodium sulfate from sodium chloride, producing sodium sulfide from sodium sulfate, producing caustic soda and its by-prod.-zinc sulfide...
76 89100885 Continuous prodn of soda from mirabilite by means of one-step method
One-step method of continuous producing sodium-alklis with mirability as raw material belongs to chem. engineering field. This invention adopts a heat accumulating pool-furnace with U-sh...
77 88109729 Process for preparing caustic soda from sea water
In this invention, sea water is concentrated by sunshine until having a Baume degree of more than 22. Lime and sodium carbonate are added in the sea water to deposit Mg and Ca out, and a...
78 89102534 Process for producing safety powder by zinc method and method for recovering so...
Sulfur dioxide is directly sent into the waste liquor while the temp. is controlled at 40-60 deg.C. When the pH value of waste liquor is equal to 5-6, original alkaline waste liquor is r...
79 89102196 Producing method of sodium carbonate
The present invention relates to a solid phase production method of pure soda which uses the material contained sodium sulfate, such as mirabilite etc. and the solid ammonium bicarbonate...
80 89105884 Manufacturing process of caustic soda by using of mirabilite heating method
The manufacturing process of caustic soda by use of mirabilite heating method takes the preparation of sodium sulfide (Na2S) solution by adding A' reduced from the auxiliary material A i...
81 89101455 Extracting potassium sulphate and its by-products magnesium sulfate, etc. from ...
The present invention refers to a method for extracting potassium sulfate, magnesium sulfate, and calcium sulfate from mixed ore of gypsum and polyhalite. The solvent contg, 3.5% potassi...
82 89103220 Process for making sodium hydroxide from mirabilite
The whole procedure of the present invention includes melt-out, slag immersing, inversion and condensation. The characteristics of the method provided by the present invention are simple...
83 89102919 Salt collector
This salt collector for salt pond comprises salt collecting mechanism and conveyer, and features that it is borne on buoyant bodies. A static buoyant body bears conveyer belt and a movin...
84 89105904 Process for producing caustic soda by causticizing method
This invention features as follows: Appropriate catalyst is added in during causticization for making the transform rate of Na2CO3 up to 99%; Rotating-up dewater and high-speed rinsing e...
85 89106241 Process for purifying potassium sulfate
In this invention, the content of potassium sulfate is increased from 65% in coarse sylvine to over 93% by double decomposition and substitution reaction between potassium hydroxide and ...
86 89104904 Technology and apparatus for united production of salt and potassium chloride
This invention relates to a process to simultaneously produce sodium chloride and potassium chloride through evaporating crystallization, separation and addition of brine by using the bi...
87 89105929 Method for removing ions of calcium and sulfuric acid radical from common salt ...
The invention uses witherite powder as treating agent which reacts with crude salt solution or bittern at normal atmospheric temp. The two-stage treating technology and the cinder recove...
88 89105294 Process for preparing soda ash from bittern
In this invention, the bittern under-or above-ground is mainly used, and lime and soda ash are first added for separating Ca and Mg ions out by deposition. Then, the residue is heated to...
89 89105756 Manufacturing process of caustic soda by use of ionization-causticizing method ...
The present invention relates to an extracting process of caustic soda from trona by use of ionization-causticizing method. It is usually that the sodium hydroxide and calcium carbonate ...
90 89102441 Industrial installation for producing epsom salt and common salt at high/low te...
By use of this separator, coarse salt pulps of magnesium sulfate and sodium chloride are obtained respectively from the upper and bottom portions of the separator. Through routine proces...
91 89105500 Making Method of sodium hydroxide
A fabrication method of hydroxide of Na and K or Ba from sulfied of Na and K or Ba is published in this invention. Proper copper oxide is put into aqueous solution of sulfide of Na and K...
92 89108796 Process for comprehensive utilization of acid dregs
The acid dregs generated during petroleum refining, and chemical, petrochemical and coal tar procedures are used to take part in different reactions with such chlorides as sodium chlorid...
93 89108806 Liquid-phase circulating substitution process for preparing alkali from mirabil...
This process uses mirabilite as raw materials, and a carrier is used in liquid-phase for circulating substitution. Huge high-temp calcining apparatus is not required because of no need o...
94 89108051 Process for prepg. basic metal carbonates
Sodium salt of bisphenol A and calcium sulfate are formed by the reaction of Na2SO4, Ca(OH)2 and bisphenol A in aqueous solution at low temp. Then solution of sodium salt of bisphenol A ...
95 89105161 Sodium dihydrogen phosphate salt and the method for making same
The process uses phosphoric acid, sodium sulphate, potassium chloride and ammonia as material which is associated, displaced and decomposed by alkyl tertiary amine to prepare the sodium ...
96 90100955 Process for preparation of carbonates of alkali metals
This invention relates to a process for preparing carbonates of alkali metals, which benefits energy saving and environmental protection. Through electrodialysis of alkali metal's salt,...
97 89105833 Method for removing magnesium from sodium chloride solution
The present invention refers to a method for removing magnesium from sodium chloride soln. It is suitable for refining aqueous crude sodium chloride and brine, as well as for making Mg(O...
98 89104135 Method for refining saline using witherite mineral powder
The present invention makes the cheap and easily available witherite ore be ground into mineral powder which is added in the coarse saline and reacts with the Ca ion and SO4 in saline to...
99 89106858 Process for preparing potassium dihydrogen phosphate and potassium sulfate
In this invention, such fertilizers as ammonium dihydrogen phosphate or ammonium sulfate and potassium chloride are used as raw materials to produce potassium dihydrogen phosphate and po...
100 90105811 Process of improvement of saltcake quality
In this invention, 0.8~1.5 Kg of ammonium sulfate is added into every cubic meter of purified saltcake liquor to conduct a reaction to decrease the content of sodium carbonate in purifie...
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