Device for refining magnesium and preparation of magnesium alloys |
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IPC classes for russian patent Device for refining magnesium and preparation of magnesium alloys (RU 2273673):
      
 Method for pyrometallurgical processing of non-ferrous ores and concentrates for producing of matte or metal and flow line for performing the same / 2267545
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.
 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
Method of production of powdered fluxes / 2261927
The invention is pertaining to the field of nonferrous metallurgy, in particular, to the methods of production of fluxes for melting and casting of magnesium and its alloys. The method of production of powdered fluxes includes dehydration of the solid carnallite and flux-forming additives containing a water of crystallization. At that the dehydration is conducted in several stages in a multichamber furnace of a boiling layer. On the first stage the carnallite is treated with chimney gases, on the second stage the carnallite is treated with the chimney gases containing hydrogen chloride, and on third stage it is mixed with the flux-forming additives containing the water of crystallization and conduct the air separation. The chimney gases are produced due to feeding of chlorine-containing gases in the flare of the natural gas burning. Specific consumption of chlorine per 1 ton of a dehydrated carnallite makes 50-200 kg ensuring a raise of productivity of the flux production process and improvement of its quality.
 Magnesium refining and magnesium alloy production apparatus / 2260067
Proposed apparatus for magnesium refining and magnesium alloy production has furnace made in the form of shaft with refractory-material lined casing, crucible with flange, supporting ring, and cover; supporting ring is provided with removable compensator made in the form of conical metal cup with hole in cup bottom disposed on outer surface of crucible and provided with supporting flange built integral with cup; it also has carrying posts installed inside lining which are uniformly spaced apart over casing perimeter and are built integral with furnace casing integral to form welded structure; compensator is installed through its supporting flange on supporting ring of carrying posts by means of adjusting bolts forming clearance between compensator cup bottom and casing lining; crucible is mounted through its supporting flange on cup bottom. Furnace top is not lined. Clearance is provided between supporting ring of carrying posts and furnace lining. Cup cone diameter in top part is larger than that of cover.
Method of production of metallic magnesium / 2254390
Metallic magnesium is produced by drying and calcination of magnesium oxide, preparation of charge containing MgO-Al-rare-earth metals, pressing the charge for forming tablets, reduction of oxide and vacuum distillation of magnesium; rare-earth metal is taken in the amount of 10-15 mass-%. Calcination of magnesium is performed at temperature of 750-850°C and pressure of 5-10 mm Hg continued for 2-3 h. Reduction process is conducted at residual pressure of 10-5-10-6 mm Hg and temperature of 1050-1150°C continued for 15-20 h and excess of reductant relative to stoichiometry in the amount of 15-20%.
Coating gas composition and method for using thereof / 2246548
Claimed coating gas composition includes at most 1 vol.% of fluorinated inhibitor and carrier gas. Each composition component has Global Warming Potential (GWP) (as referred to absolute GWP of carbon dioxide at decomposition time of 100 years) less than 5000.
 A method of producing magnesium from silicon waste / 2240369
The invention relates to ferrous metallurgy, in particular to methods for production of magnesium by electrolysis of molten salts
A method of producing magnesium from silicon waste / 2237111
The invention relates to ferrous metallurgy, in particular to methods for production of magnesium by electrolysis of molten salts
 The method of preparation of a solution of magnesium chloride / 2233898
The invention relates to a method of extracting magnesium from containing magnesium material, such as magnesite, dolomite and silicate type of serpentine residues, products amphibolite and pyroxene groups
Furnace continuous refining of magnesium / 2228964
The invention relates to ferrous metallurgy, in particular to a device for refining magnesium
Furnace for refining magnesium / 2222623
The invention relates to metallurgy, in particular to the furnaces for refining magnesium
A method of producing magnesium from synthetic carnallite / 2218452
The invention relates to the field of metallurgy of non-ferrous metals, in particular the production of magnesium by electrolysis of the molten chloride
Coating gas composition and method for using thereof / 2246548
Claimed coating gas composition includes at most 1 vol.% of fluorinated inhibitor and carrier gas. Each composition component has Global Warming Potential (GWP) (as referred to absolute GWP of carbon dioxide at decomposition time of 100 years) less than 5000.
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FIELD: non-ferrous metallurgy; production of magnesium; melting and refining of magnesium and preparation of magnesium-based alloys. SUBSTANCE: device refining magnesium and preparation of magnesium alloys includes furnace made in form of shaft with casing lined with heat-insulating and refractory layers, heaters, crucible with flange, bearing ring and cover; refractory layer consists of several detachable cylindrical blocks in height of furnace shaft interconnected by means of tenon-slot joints and provided with projection on outer side and slot on inner side. Detachable block is solid in form and is assembled from half-rings which are interconnected by means of slot-to-slot joints and are secured by mortar. Block is made from high-strength chemically and thermally stable refractory material, for example concrete claydite or fluorine phlogopipe. Heat-insulating layer is made from basalt slabs. Ratio of refractory and heat-insulating layers is equal to 1:1.5. Zigzag heaters are secured on refractory block over entire height of furnace shaft. EFFECT: increased service life of lining and increased productivity; reduced power requirements. 9 cl, 3 dwg
The invention relates to ferrous metallurgy, in particular to the production of magnesium, in particular for melting, refining of magnesium and preparation of alloys based on magnesium. A device for the preparation of magnesium alloys (kN. Metallurgy of magnesium and other light alloys. - Mahagenco. - ed. M.: metallurgy, 1974. - str; kN. Metallurgy of magnesium. - Hellriser, Austic, Bushwackin. - M.: Gosizdat, 1960, str-456), made in the form of mine crucible electric resistance furnace, consisting of a steel shell, lined inside a heat-insulating and refractory layers. The lining forms a cylindrical shaft, which set steel crucible with a flange. Nichrome spiral heaters installed in grooves made in the refractory lining shaft furnace. The disadvantage is that the productivity of the furnace is insignificant, since the capacity of the crucible is very low. A device for refining and preparation of alloys of magnesium (asscr No. 384939, epubl, bul)consisting of a resistance furnace containing casing, a refractory lining and spiral heaters placed in niches and made with reference consoles, with niches heaters are made with clearances formed symmetrically located on the height of the shaft furnace of the vertical grooves. The crucible has a flange and fitted the n this flange on the lining in the shaft furnace, and on top of the furnace cover is closed. The disadvantage of this device is that the refractory masonry of the furnace quickly breaks down, which leads to frequent repairs of the furnace and the low productivity of the furnace. A device for refining magnesium and preparation of magnesium alloys (kN. Electrolytic production of magnesium. - Gscraper. - M.: metallurgy, 1965. page 112-113), the number of General characteristics adopted for the nearest equivalent is the prototype and including an electric resistance furnace, is made in the form of a shaft with heaters, in which the crucible flange. The furnace consists of a cylindrical steel casing with thermal insulation and refractory layers, on top of the lining stacked cast-iron circular plate on which establish the flange of the crucible. The ring plate is placed Samooborona stones. To reduce heat loss crucible in the furnace cover protective cover on the lever with a counterweight. As an insulating layer used diatomite, as refractory fireclay bricks and brickwork carried out so that the inner layer was formed niches to install spiral heaters. The disadvantage of this device is that the refractory masonry of the furnace for burning niches quickly breaks down, which leads to frequent repair of the m furnace and low performance. In addition, heaters often fail, causing a short circuit in the chain that leads to the frequent stops of the furnace and the cost of replacement of electric heaters. The presence of niches in the walls of the furnace also leads to additional heating, which leads to additional heat loss from the surface of the casing and thereby increase the power consumption. The presence of a large number of masonry joints increases the installation of the furnace lining. The technical result is to eliminate the disadvantages of the prototype and aims to increase lining life and heater device, reducing the time of installation of the lining of the furnace and thereby to increase the device performance and power savings. The technical result is achieved by the fact that the proposed device for refining magnesium and preparation of magnesium alloys containing oven, made in the form of mine with a casing, lined with insulation and refractory layers, heater, crucible with flange support ring and cover, in which the refractory layer on the height of the shaft furnace is made of a separate removable cylindrical blocks, interconnected by tongue and groove and provided with a protrusion on the outer side of the upper part of the end face and a groove on the inner side of the lower part of the butt. In addition, the removable unit is made whole. Cu is IU, the removable unit is made of half-rings. In addition, semi-removable units are interconnected by the fastening groove-groove and secured mortar. In addition, the removable unit is made from high-strength, chemically and thermally resistant refractory material, such as granite-like or forflorida. In addition, the insulating layer is made of basalt slabs. In addition, the ratio of the width of refractory and heat-insulating layers is 1:1,5. In addition, the heaters are made zigzag. In addition, the heaters attached to the removable blocks along the entire height of the shaft furnace. Execution refractory layer of the furnace from a removable cylindrical blocks can reduce the time of installation of the furnace and extend its services. Conducted by the applicant's analysis of the prior art, including searching by the patent and scientific and technical information sources, and identify sources that contain information about the equivalents of the claimed invention, has allowed to establish that the applicant had not found the source, which is characterized by signs, identical all the essential features of the invention. The definition from the list of identified unique prototype, as the most similar set of features analogue, has allowed to establish the essential with respect to the apparent stated what ielem technical result of the distinctive features in the claimed device for refining magnesium and preparation of magnesium alloys, set forth in the claims. Therefore, the claimed invention meets the condition of "novelty." To verify compliance of the claimed invention the term "inventive step", the applicant conducted an additional search of the known solutions to identify signs that match the distinctive features of the prototype of the characteristics of the claimed device. In the search result is not found for new sources, which are derived explicitly for the specialist, and the prior art, a particular applicant identified the influence provided the essential features of the claimed invention transformations to achieve a technical result, increased service life and performance of the device for refining magnesium and preparation of magnesium alloys. Therefore, the claimed invention meets the condition of "inventive step". Figure 1 is a completed unit for refining magnesium and preparation of magnesium alloys, figure 2 - solid removable block in figure 3 - a removable unit, made of ring-shaped connection groove-groove. The device is made from the furnace 1 with the shaft 2, zigzag heater 3, a metal casing 4 with the insulating layer 5, the refractory layer 6, made of a cylindrical plug-in units 7, connected by a type of tongue and groove 8 and CH is brennah ledge 9 on the outer side of the upper part of the end face and the groove 10 on the inner side of the lower part of the face, while the blocks are made of solid 11 or in the form of half-rings 12 and the rings are interconnected by type groove-groove 13 and bonded mortar 14 in the form of the crucible 15 and a flange 16, a supporting ring 17, the cover 18. The device operates as follows. Kiln produced as follows. In a metal casing 4 on the furnace hearth is placed a layer of fireclay brick with tabs for installation of removable cylindrical block 7, which is prepared in advance of a high-strength, chemically and thermally resistant refractory material, such as granite-like or forflorida, whole 11 or in the form of half-rings 12. Blocks connected to each other by the projections 9 and the grooves 10 by the type of tongue and groove 8, forming the shaft 2. In the gap between the casing 4 and the removable blocks 7 install basalt insulation boards, forming the insulating layer 5. The shaft 2 on the plug-in units 7 hang on special hooks nichrome zigzag heaters 3. On top of the removable block 7 mounted on the support ring 17 with the flange 116 of the crucible 15. In the crucible furnace 15 1 load the vacuum bucket magnesium. When the temperature of the metal 700-710°in the crucible install heated red-hot stirrer. After switching on the stirrer in the metal download small portions of dried mixture of titanium melt and flux in a 1:1 ratio and produce stirring for 20-25 mi the ut. After mixing the stirrer is removed and the metal defend 20-30 minutes. Then take samples and send the metal to the casting process. For the preparation of alloys, such as the brand MM-2 in the crucible 15 is poured magnesium, to protect from burning the metal surface sprinkled flux. Then in the crucible 15 install-heated mixer and injected small amounts of alloying component - manganese mixed with a flux of 1:1 mix. Select a sample for analysis, and then served alloy by casting. Thus, the proposed device allows the period of its operation to eliminate the repair of the lining, to eliminate the downtime of the furnace and the additional cost of electricity in the furnace. This allows you to increase the useful life of the device by 15%, reduce the consumption of refractories, the costs of capital repairs of the furnace, to reduce energy consumption. 1. Device for refining magnesium and preparation of magnesium alloys containing oven, made in the form of mine with a casing, lined with insulation and refractory layers, heater, crucible with flange support ring and the cover, wherein the refractory layer on the height of the shaft furnace is made of a separate removable cylindrical blocks, interconnected by tongue and groove and provided with a protrusion on the outer side of the upper part of the end face and the groove with the inner the second side of the lower part of the butt. 2. The device according to claim 1, characterized in that the removable unit is made whole. 3. The device according to claim 1, characterized in that the removable unit is made of half-rings. 4. The device according to claim 3, characterized in that each block are connected by fastening groove-groove and secured mortar. 5. The device according to claim 1, characterized in that the removable unit is made from high-strength, chemically and thermally resistant refractory material, such as granite-like or forflorida. 6. The device according to claim 1, characterized in that the insulating layer is made of basalt slabs. 7. The device according to claim 1, characterized in that the ratio of the width of refractory and heat-insulating layers is 1:1,5. 8. The device according to claim 1, characterized in that the coils are constructed zigzag. 9. The device according to claim 1, characterized in that the heaters attached to the removable blocks along the entire height of the shaft furnace.
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