Synthetic metallurgical blowing powder and its preparation
Raw materials of this metallurgical powder are electric furnace white slag and bittern water, by mixing according to a proper composition, granulating, desulfurizing and drying by heatin...
Aerating apparatus used within the body of converter
This is an aerating apparatus used within the body of converter. An aerating board of metal is inserted between the adjacent fire bricks in the predetermined position of converter bottom...
Electricity saving high productivity electric-arc furnace
The furnace of this invention consists of two furnace shells connected by removable water-cooling exhaust pipes, exhaust shift and dust-removal system, and a set of secondary short-circu...
Semi-continuous casting nodular cast iron pipe mfg. method
In this invention, the blast furnace melt iron is added by melt steel to regulate the chemical compsn., over heated by electrical furnace and after the incubation spheroidizing, is caste...
Installation with a refractorily lined metallurgical furnace
At the top of the furnace there is an opening over which stands a chimney. Between the furnace and the chimney there remains sufficient space for setting a hood. In order to provide a de...
Process for producing nodular iron
This invention provides a method using spheroidal graphite to produce cast-iron, using metallic Mg to treat the molten iron. By adding Ca2Si, the sulphur in MgS, which is an unstable com...
14
85104161
Directional electric arc heating device
The device includes at least a metal consutrode contacting with melted metal in a vessel and a graphite electrode above melted metal. The position of graphite electrode is adjustable. Th...
15
85103477
Equipment for vacuum refining of molten steel
This equipment is used for vacuum refining of the molten steel which has been smelted roughly. Using this equipment, we can subject the molten steel to vacuum-pumping, vacuum de-carbon b...
Process for desulphurising melten metal
It concerns desulphurising in the cast ladle, specially mixing ladle. First the Al and then the CaO are blown into melten metals by gas transport. The feature is that the transport gas, ...
Reuse of steel slag
To the melted steel slag, some of the following materials are added: silicate rock, mineral or its efflorescence material, calamine, broken glass, casting sand, coal dregs, waste brick, ...
Cermet oxygen-blow pipe
This invention concerns an oxygen-blow pipe for steel smelting which is composed of two parts___a working end and a non-working end, the former being made of cermet which possesses the p...
25
85106853
Process for refining molten metals
The present invention relates to a process for producing of low-phorsphorus steel from molten metals having conveniently phosphorus content, wherein the decarbonizing and dephosphorizing...
26
85108708
Oxygen lance for secandary feeding oxygen to convertor
A oxygen lance device for secondary feeding oxygen to convertor is useful for blowing oxygen into the metallurgical convertor for secondary oxygen supply. The device consists of a red co...
Wall member for converter chamber A wall member for a converter chamber for the treatment of cast iron melt with magnesium. The size and shape of the wall member of a converter have a decisive influence on the efficiency ...
30
85108860
Method for vaporizing additives in metal melts A method of vaporizing additives in a metal melt. The method is carried out in a vessel which has a chamber in which at least one additive is placed. The geometric configuration of the ch...
31
85108571
Rotary device, apparatus and method for treating molten metal A rotary device for dispersing a gas in molten metal comprises a hollow shaft and a hollow rotor fixedly attached to the shaft, with the character that the rotor is hollow and has a plura...
Smeting and ingot-casting method for the lead treated steel
According to the principle that lead has a certain solubility in molten steel by the action of external pressure, nitrogen gas or argon gas or other inactive gas is filled in smelting fu...
34
86101396
Apparatus for heat preservation of melted metal An apparatus (1) for storing and maintaining the temperature level of molten metals, such as a cast iron melt which has been treated with pure magnesium. The apparatus includes a heatable...
Method and apparatus for casting iron treated with magnesium A casting furnace is fed an inert gas under pressure through a feed line with the pressure being regulated by a melt level control device. When the pressure is reduced, the inert gas is e...
37
86102142
Lance supporting device
The device has a lance turntable rotatable within a plane and carrying a plurality of lance operation units each supporting a lance for inserting a gas and/or a powdered treating agent i...
Process of self-decomposition for vessel slag afterheat
The invention relates to process of vessel slag afterheat self-decomposition, which includes putting the hot slag awaiting treated in pressure container, then spraying water on the surfa...
Recovery of vanadium oxide
The present invention is referred to the process for recovery of vanadium oxide from a melted metal and a device therefor, which process makes oxygen, and at least one cooling gas or shi...
47
86104384
Manufacture of steel in d.c.furnace In a process for producing steel having an adjustable carbon content, a direct-current arc furnace is equipped with at least one electrode (1) which has a through-channel (3) and is conne...
Separately-loadtd recombustion cupola furnace
The separately-loaded recombustion cupola furnace is a kind of successively melting equipment for casting. The furnace body consists of a main shaft, a recombustion section and preheatin...
51
86106699
Process for ranadium residue
By means of blast furnace metallurgy of vanadium iron with gaseous oxidizing agent, a vanadium residue suitable for vanadium containing product such as vanadium pentaoxide and vanadium a...
Fine grained desulfurizer for molten iron A fine-grained agent for desulfurizing molten iron comprising industrial calcium carbide, dried coal which contains at least 15% by weight of volatile constituents and which, immediately ...
56
86108629
Manufacture of medium Mn content anti-wear nodular cast iron
This invention uses low quality cast iron and waste iron instead of good quality iron to smelt, through formulating, anti-wear nodular cast iron of medium Mn content, which is of excelle...
Activator mixture for increasing strength of iron alloys
The present invention is related to a kind of multicomponent compositive activator mixture. While it is used in the procces of production of iron and steel or is used as metal wires fill...
Inoculant for gray pig iron A ferrosilicon inoculant for gray cast iron containing between 0.1 to 10% strontium, less than 0.35% calcium and either 0.1 to 15% zirconium, 0.1 to 20% titanium or a mixture of both zirc...
61
87100551
Coal-oxygen composite blow technology for oxygen converter
This invention is a composite blow technology for the oxygen top-blow converter adopting bottom blowing coal-oxygen. The whole smelting process is regulated and controlled through the to...
62
87100479
Decontamination plant on the metallurgical revolving furnace A flushing arrangement for a metallurgical converter stack, in order to provide a flushing means that is simple to produce and install and prevents effectively leakage of a melt, a rigid ...
63
87101759
Magnesium calcium oxide composite A product and method of manufacture are set forth. The product is used in desulfurizing steel. Magnesium is in its molten state, and with vigorous stirring, a reactant, such as CaC2 is ad...
64
87101926
Improved smelting technology of electric furnace
According to the capacity of electric furnace and smelting temp., 1 to3 vortex flow type coal-oxygen lances may be used. They are mounted on the wall of electric furnace at a definite di...
Injection of substances into high temp. liquids Gas injection into a metal melt, accompanied if desired by powdered or solid treatment substances, is by way of a nozzle (14) inserted into the wall (12) of a melt-containing vessel (10)....
67
87103463
Steel making flux Phosphorus furnace slag is used as a ladle flux and/or as a tundish flux in the continuous casting of steel. The phosphorus furnace slag uniquely combines the properties of thermal insula...
68
87101576
Si-Al-Fe composite deoxidizing agent
This invention relates to a composite deoxidizing agent for steelmaking. It consists of three kind of metals: silicon, aluminium and iron. It may be used in place of Al-Fe and pure alurn...
69
87104689
Improvements in nozzles for injecting substances into liquids An injection nozzle (10) is installed in the wall (13) of a liquid containment vessel (14) and comprises an assembly of refractory component bodies (18, 19, 20); injection passages (22) f...
70
87104829
Improvements in apparatus for injecting substances into liquids For injecting substances into a liquid e.g. molten metal, a nozzle block is mounted in the wall of a vessel containing the liquid. Initially, an injection passage extending through the bl...
71
87104957
Continuous steelmaking technique and equipment
The invention improves steelmaking technique and equipments. The features are that there are front furnace, tank furnace and back furnace; the weight and flow of melten iron are measured...
72
87105036
Dehydrogenizing method of molten steel and spraying apparatus
This invention provides a dehydrogenizing method of molten steel and its spraying apparatus. A mixture of carbon tetrachloride and argon is used in the dehydrogenizing processing of molt...
Spraying reaction agent of liquid metal Injectable reagents useful for innoculating molten process metals, such as molten iron, are prepared by effecting an impregnation of a minor amount of a molten metal reagent, such as Mg o...
Injection tube for fibred material An injection nozzle for the addition of an agent in wire form directly into the interior of a molten material includes a tip having an axial bore with a terminal opening through which the...
79
88101363
Alloy substituting bismuth for inoculated cast iron
The alloy substituting bismuth is extracted from electrolysis mud at anode and dust in metallury of tin, copper and lead. After remelting and regulating the alloy contains bismuth 4-14%,...
Dephosphorization in cupola furnace
The technical method in this invention is a new technique used in steel smelting and founding industries. The BaCO3 is added into the cupola furnace to realize the dephosphorization in i...
85
88102699
Blow purifying device
For elongating the service duration of blow purifying device of a metallurgical container, a bearing part which has multiple receiving cavities is arranged. Each receiving cavity can hol...
Steel-smelting process from steel scrap
This invention provides a process of smelting steel from steel scraps. Monopole direct current and lined electroslag furnace is used in this process. When scratch starting and slag makin...
Disinfection disposal of aluminium slag
This invention provides a detoxication process for treatment of chromium slag. In the condition of no-increasement of the investment in equipements, the chromium slag may be used instead...
90
88104493
Preparing method of Si-Fe-Bi instantaneous inoculant
This invention relates to a preparing method of Si-Fe-Bi instantaneous inoculant for the production of spherulitic iron. The inoculant is made of silicon iron, bismuth and flux by meehan...
91
88106681
Method and apparatus for pouring hollow ingot with electroslags
The present invention belongs to a technical field of electroslags refining in iron and steel metallurgy for producing high-quality hollow ingot. Heated slag liquid is poured into a cavi...
Cast-iron used for glass bottle mould
This invention provides a cast-iron used for making the mould of glass bottles. Its chemical components (%) are as follows: C 3.1-3.7, Si 1.5-2.3, Mn 0.5-0.9, P less than 0.1, S less tha...
94
88107940
Method of producing general-purpose steel
The present invention includes: smelting carbon semi-product in the steelmaking equipment; injecting that into the steel ladle; adding the slag-making materials, the reducing agent and t...
95
88107845
Method of steel smelting with unbalance of iron and carbon
This invention relates to a new technology for electric furnace process of steelmaking. The iron-carbon reaction is utilized for melting steel scrap to raise heat efficiency. Most of pho...
96
89105367
Method for charging rare-earth oxid dregs into cupola furnace
In this invention, rare-earth oxide dregs directly reduced in a cupola furnace is utilized, and the resultant acts on the sulfur in molten iron to form a rare-earth sulfide into slags, t...
97
88108889
Making process for Si-Ba alloy
This is a kind of technique to produce Si-Ba alloy which can be used as modifying agent in casting and deoxidant in steel making. The feature of said technique lies in that Si-Ba alloy c...
98
89100357
Smelting pig iron with steel filings for nodular cast iron
The invented pig iron which is used for smelting nodular cost iron in blast furnace uses steel scales as main raw material. It is proportioned to a ratio of steel scales/ coke/ limestone...
