Method for pyrometallurgical processing of non-ferrous ores and concentrates for producing of matte or metal and flow line for performing the same |
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IPC classes for russian patent Method for pyrometallurgical processing of non-ferrous ores and concentrates for producing of matte or metal and flow line for performing the same (RU 2267545):
  
 Method of purification of zinc from oxides of foreign metals and furnace for realization of this method / 2261925
Proposed method includes loading zinc into cages in sodium tetraborate melt containing 3-7 mass-% of boric acid anhydride at temperature of 750-800°C. Furnace used for purification of zinc is provided with pot for melt for avoidance of pouring of sodium tetraborate melt. Said pot is provided with branch pipe for pouring purified zinc melt into ingot molds. Proposed method may be performed in continuous mode. Production of zinc is increased not below 99.55%.
 Furnace with inner heaters / 2246086
The melting cavity with heaters located in it, the heaters pass outside through the brickwork, where they are cooled for production of the conditions of melt crystallization inside the brickwork thus providing the furnace leak-proofness, the minimum thickness of the brickwork is determined by an empirical relation: dmin=a+b(Tf-Tmelt)/Tmeit+C[Theat/Tmelt-Theat)]2, where: dmin- the minimum wall thickness; Tf - the temperature of metal inside the furnace; Tmelt- the metal melting point; Theat- the temperature of the outside end faces of heaters; a, b, c - empirical coefficients equal to 10, 25 and 2,2 cm respectively.
 Vanyukov furnace for continuous melting of materials containing non-ferrous and ferrous metals / 2242687
The invention relates to the field of metallurgy, in particular to a device for the continuous processing of laterite Nickel ore
 Furnace continuous refining of magnesium / 2228964
The invention relates to ferrous metallurgy, in particular to a device for refining magnesium
 Method and device for the production of gallium from waste semiconductor gallium phosphide / 2226563
The invention relates to the technology of waste processing semiconductor of gallium phosphide to extract expensive and scarce gallium
 Furnace for refining magnesium / 2222623
The invention relates to metallurgy, in particular to the furnaces for refining magnesium
 Melting and casting device for producing small castings / 2211419
The invention relates to foundry and can be used for small castings of high-level radioactive metals and alloys, particularly dentures and jewelry
 Laboratory oven for optical research / 2202747
 Method of processing vanadium-containing converter slag / 2266343
Proposed method includes roasting of slag with reaction additive, leaching-out cinder by soda solution for obtaining vanadate solution and separating vanadium oxide from it. At roasting, waste slag of vanadium process is introduced as reaction additive; waste slag contains hematite and manganese oxide at mole ratio of vanadium to manganese equal to 1:1. Roasting is performed at 800-850°C for 3 h; leaching-out is carried out with soda solution at mole ratio of V2O5:Na2CO3 equal to 1:1.2-1.8 including filtration of sodium vanadate solution and flushing the sediment with water. Vanadium and sodium are separated from solution thus obtained by electrochemical treatment in membrane system, sorption or neutralization by sulfuric acid followed by sedimentation of polyvanadium acid salts.
 Method of preparation of samples of metallurgical slags for chemical analysis / 2263151
Proposed method includes grinding the slag sample, mixing and reducing sample mass which are performed at seven stages. First stage includes grinding the slag sample. Second, third, fourth, sixth and seventh stages includes grinding, mixing and reducing sample mass to required magnitude. Fifth stage includes drying and cooling the sample. Prior to first, second, third and fourth stages, metallic inclusions are manually removed. At fourth, sixth and seventh stages metallic inclusions are removed by screening in sieves between grinding operations.
Charge for depletion of nickel-cobalt converter slags / 2258754
In order to reduce losses of cobalt and nickel with refuse slags and to increase recovery of valuable components into matte, charge containing sulfidizing agent, marble crumb (6-10%), and coke (15-25%) further contains 2 to 20% of aluminum-containing slag obtained in secondary aluminum processing.
 Step crushing process for regeneration of noble metals of slag / 2251581
Method comprises steps of multiple crushing for producing at each step slag particles with successively decreased (from step to step) diameters; repeating crushing steps until producing particles with desired final size of their diameter; suspending crushed particles of slag in liquid medium after each crushing step; using slag produced after coal combustion in fire box or in boiler; performing steps of suspending for producing suspension with light and heavy particles, the last include noble metals; separating crushed particles in suspension on base of their mass and individually concentrating light particles and heavy particles; after each suspending step removing light particles from suspension for preparing suspension containing, mainly heavy particles; then trapping heavy particles for further crushing of them in order to produce desired final size of particle diameter.
 Method of regeneration of metallic chromium from slags containing chromium oxide / 2247161
Proposed method is used for converter processes such as AOD, MRP, AOD-L, MRP-L, CLU, ASM, Conars-Stainless steel, or vacuum processes such as VOD, SS-VOD, RH and RH with use of oxygen lance. Slag formed at the end of blowing and treatment in converter or vacuum plant is drained and removed in unreduced state; this slag is fed to electric furnace which is loaded with standard charge consisting of metal scrap and residual dust; then carbon is additionally fed and silicon if necessary; during melting, chromium oxide contained is slag is reduced by means of carbon and silicon.
 Method of depleting slags from smelting of oxidized nickel ores / 2244028
Claimed method comprises combining slags using extraction principle with number of extractions n approaching infinity. Depleting agent efficient in presence of reducing agent is selected from materials enriched with pyrite, pyrrotine, calcium sulfide, and calcium sulfate; metal and alloys mainly containing Si, Al, Fe, C, etc. as well as reducing and sulfidizing complexes consisting of sulfides, oxides, and reducing substances (C, Me). Carbonaceous reducers, utilized individually or in mixture, are any known carbonaceous reducers. Degree of metal Me recovery is in accordance with conventional extraction equation.
 The method of processing slag or slag mixtures / 2238331
The invention relates to metallurgy, in particular to a method of processing steel slag or mixtures thereof
 The method of removal of chromium and/or nickel from a liquid slag / 2237732
The invention relates to metallurgy, in particular to a method for removal of chromium and/or Nickel slags
 The electric furnace for slag processing / 2235255
The invention relates to the field of non-ferrous metallurgy, in particular to the design and operation of ore-thermal furnaces with immersion of the electrode in the slag melt, and can also be used in ferrous metallurgy and chemical industry
 Method for processing of oil-containing briquettes chip active refractory metals and alloys and device for its implementation / 2234547
The invention relates to the field of metallurgy active refractory metals and alloys, including rare earth and actinides, in particular to methods of processing of oil-containing briquettes chips of the above metals and alloys and devices for their implementation
 Method of reduction of copper from sulfide compounds / 2254385
Proposed method of reduction of copper from sulfide compounds includes reduction of copper by sulfide sulfur; sulfide copper material is charged with caustic soda at the following ratio: 1 : (0.5-2.0) and is heated at temperature 400-650°C for 0.5-3.5 h. Reduction of copper from its sulfide compounds may be performed at temperature below melting point at exclusion of forming of gaseous sulfur-containing products.
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FIELD: non-ferrous pyrometallurgy, in particular, small-scale or average-scale production of matte or metal with the use of mobile equipment in poorly settled regions with non-existent or weakly developed infrastructure. SUBSTANCE: method involves melting with the use of oxygen-containing blast gas; converting; depleting slag in gasifier; reducing gases from melting process and converting with hot gases from gasifier. Oxygen-containing blast gas used is exhaust gas of energetic gas turbine unit operating on natural gas or gas generating gas from coal gasification. Gas used for gas turbine unit is gas generating gas from bath coal gasification produced on slag depletion. Flow line has melting bubbling furnace, converter, gasifier for slag depletion, gas turbine unit with system of gas discharge channel connected through branches with tuyeres of melting furnace, converter and gasifier. Each of said branches is equipped with pressure regulator and flow regulator. EFFECT: reduced costs for performing method owing to employment of mobile equipment. 3 cl, 1 dwg, 1 ex
The invention relates to the metallurgy of non-ferrous metals. Typical technological scheme of pyrometallurgical processing of sulfide or oxide ores of non-ferrous metals usually consists of operations - batch preparation for smelting, melting for oxidized materials fusion is combined with solifidianism, conversion, depletion slag refining of metals. /Khudyakov IVAN Tikhonov, A.I., Deev VI, naboychenko S. metallurgy of copper, Nickel, cobalt. M.: metallurgy, 1977, vol. 1, 2., Mechev B.B., Bystrov VP, Tarasov A.V. and other Autogenous processes of non-ferrous metallurgy. M.: metallurgy, 1991/. There are numerous methods of melting /in the electric furnace, shaft furnace, acetylene aggregates/, how konvertirovanie with vertical, lateral, bottom-blown, etc./, how depleted slag /furnaces, bubbling furnace, etc,/. All technological schemes use energy, electric current, compressed air, oxygen, coal, natural gas, fuel oil, etc. In recent years has acquired particular importance autogenous processes using oxygen, which allowed us to use the heat from the oxidation of sulfides in industrial processes. Examples of effective autogenous processes are processes patent No. 54147, 22, 5/14, Pat. No. 4294433, 4252540 /USA/No. 2851098 /Germany/, No. 2444721 /France/. We offer a more efficient process - PA is. No. 20935936 22 In 7/14. Most of the above methods are intended for large-scale production in terms of infrastructure. In recent years, in Russia there are small and medium-sized steel enterprises in sparsely populated areas where there is no electricity, but there is a coal or natural gas or associated gas in oil production, which is irrational burned. The technical result of the invention is a new method of pyrometallurgical processing of ores and concentrates of non-ferrous metals and new metallurgical production line that allows you to organize economic production in small and medium volumes using mobile equipment in sparsely populated areas with missing or underdeveloped infrastructure. The technical result is achieved by the method pyrometallurgical processing of ores and concentrates of non-ferrous metals to produce the matte or metal, including melting with the use of blowing oxygen-containing gas, converting, depletion of slag in the gasifier, the recovery of gases from smelting and converting combustible gases from the gasifier according to the invention as blowing oxygen-containing gas using the exhaust gases of gas turbine power plant running on natural gas or producer gas gas of the gasification of coal. At the same time as gas for gas turbine using gas-producing gas from coal gasification in the tub with the impoverishment of the slag. The technical result is also achieved production line pyrometallurgical processing of ores and concentrates of non-ferrous metals to produce the matte or metal, including bubbling melting furnace, Converter, gasifier for depletion of toxins, according to the invention it contains energy gas turbine installation with gas exhaust duct connected via taps with lances melting furnace, Converter and carburettor fitted in front of each pressure regulator and flow. Gas turbine installation capacity (GTU) 2,5-25,3 MW, gas-fired, are widely used in pumping stations, while the exhaust gases with the content of 17-18% oxygen and temperature 400-500°discarded. In large stationary gas turbine exhaust gases are directed into the boiler, where the heat is utilized. However, the oxygen gas is not used, is contained in NO gases emitted into the atmosphere, disrupting the ecology. The use of gas after GTP technologies for non-ferrous metals can be disposed of heat and containing residual oxygen, to reduce the cost of technology, in particular, due to the refusal of oxygen and compressed air. Prima is the group of oxygen-containing gas with a temperature of 400-500° Since is not possible to form the wall accretions on the tuyeres in the Converter, bubbling furnaces for any purpose. This fact gives an opportunity not only to get rid of time-consuming operations when existing technologies, but to fully automate the process, go for them with the help of computers. Specific performance units will be lower than when using oxygen, but for small and medium enterprises it doesn't matter. Will significantly increase the resistance of aggregates and their turnaround time. GTU work when the air excess factor α=4-5. Get what you can melt 350-400 t/d of copper concentrate. The cost of electricity for own needs of the plant will be low - lighting, power of motor transport and loading units, pumps, etc. the drawing shows the apparatus-technological scheme of the company. In GTU 1 is a natural gas and air 5 with a ratio of 1:4-5, exhaust gas enters substation 7 and a flue 11, passing through flow regulators and pressure 10, enters the tuyere 6 bubble furnace 2 and the gasifier 4, and the Converter 3. Gases from the gasifier containing hydrogen and carbon monoxide, can digitize with heat recovery, or used for recovery of sulfur is t furnace 2 and the Converter 3. Flammable gases pass through the gas duct 13 and mixed with the gases from smelting and converting input to the mixing of the ducts 8 and 9, then they come through the gas duct 12 on the disposal of sulfur and cleaned from dust. Contained in the gases of the gas turbine nitrogen oxide will in all units to recover. Excess pressure gases of the gas turbine is sufficient to overcome the post melt in all three units. The flow and pressure of the gases of the gas turbine in front of each unit governed by the flow meters and pressure regulators. When using more powerful GTU may be higher in technology and in providing enterprises with heat, steam and hot water. Advantages of the method and the proposed steel lines - can be used in areas with poor infrastructure model units, the lack of oxygen plant, high technical and economic indicators. Especially noteworthy is the ability of GTPP from combustible gas coal gasifier that allows you to organize metallurgical production in the absence of natural gas. Threaded steel line including a diagram of the gas turbine can be recycled as sulfide and oxidized ores and concentrates. In this case, the use of additives sulfidization or conducted heat recovery in the electric furnace with obtaining metal, for example, when is poluchenii antimony. For some materials can be used reverberatory, rotary kiln, which also will be used exhaust gases of the gas turbine instead of air. The method and line can be used in metallurgy of copper, Nickel, lead, zinc, antimony, gold and other An example of using the method Production line is equipped with gas turbines of 2.5 MW with the release of exhaust gases 21 m/sec. About 50% of the exhaust gases is used for melting, and the rest for the gasification and conversion. In the melting furnace is fed 215 m / min exhaust gases with a temperature of 550-600°C. experience smelting of copper concentrate in the oven Noranda with the consumption of blast 1090 m /min on the fusion - 903 tons/day of copper concentrate, get that on a cold blast you can melt about 180 tonnes of concentrate per day. Given that you are using the hot gases /600°/, the fusion will be about 400 tons / day. /Temperature smelting of sulfide concentrates-1220-1250°/. 1. The way pyrometallurgical processing of ores and concentrates of non-ferrous metals to produce the matte or metal, including melting with the use of blowing oxygen-containing gas, converting, depletion of slag in the gasifier, the recovery of gases from smelting and converting combustible gases from the gasifier, characterized in that the blowing oxygen-containing gas using exhaust energy gas the turbine installation, running on natural gas or gas-producing gas from coal gasification. 2. The method according to claim 1, characterized in that as the gas for the gas turbine using gas-producing gas from coal gasification in the tub with the depletion of slag. 3. Production line pyrometallurgical processing of ores and concentrates of non-ferrous metals to produce the matte or metal, including bubbling melting furnace, Converter, gasifier for depletion of toxins, characterized in that it contains energy gas turbine installation with gas exhaust duct connected via taps with lances melting furnace, Converter and carburettor fitted in front of each pressure regulator and flow.
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