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The introduction of electric stove
From;    Author:Stand originally

(3) roof

When electric stove undertakes fusion works, electrode immersion is inside slag, electricity is carried inside slag and heat, serve as the heat source of fusion with slag. Accordingly, from fuse-element inside the reaction gas with not much separate out and vapor. In addition, slag surface is enclothed by charging place for the most part, consequently the temperature of the roof when fusion does not exceed 600 ℃ . The furnace top that builds with argillaceous brick build by laying bricks or stones uses a case very good.

Roof uses argillaceous brick build by laying bricks or stones to build commonly. Thickness of face of furnace of large electric stove sees watch 1) for 300 ~ 400mm(normally, sometimes to reduce loss of quantity of heat, in the build by laying bricks or stones on roof an adiabatic brick, roof span is 5.3 ~ 6.2m about; Ply of roof of small-sized electric stove is 230mm. When if stay on roof,setting larger hole, use all round its fireproof and pouring makings is pouring into whole. Also have use fireproof and pouring makings pound make or bury those who set water-cooling copper pipe is prefab and fireproof pouring makings roof, it has better integral sex and sealing than bricklaying roof.

Electric stove of stannic concentrate fusion

The plant of stannum of tin ore content with stannic the most general metallurgy, namely 2 oxidation stannum (SnO2) . The stannic concentrate that smelt uses is contained commonly achieve 90 % SnO2, the purpose of fusion is oxidize stannum reductive become a metal and make metal and slag clarify depart, get reclaiming high leading, abandon broken bits as far as possible little.

Stannic concentrate is reductive fusion can undertake inside circle or circular three-phase electric stove, use many batches to enter makings, put the discontinuous operation of broken bits, time of smelt of 400kV·A electric stove is 20 ~ 22h, enter makings 8 ~ 9t, 12h of about 10 ~ is entered. Already fused entirely into charging of 12h of the about 8 ~ after expecting. Use the discontinuous operation that puts stannum to put residue for many times. The thick stannum that give off drops in temperature to be controlled to 400 ℃ in stannic boiler, scoop up face broken bits (namely second stannum) , remain it is armour stannum namely. Armour stannum contains stannum 98.7 % , second stannum contains stannum 93.9 % , send refine of course of study processing respectively. Stannum of depart of heavy Qing Dynasty of heat preservation of the bed before the classics after slag is given off, next slag puts slag bath, furnace of cooling evacuation smoke is handled.

One, the application of refine tin hot plate

Electric stove of stannic concentrate fusion applies to concentrate of fusion low stannum broken bits of melt down of reductive stannum, fusion, fusion contains broken bits of silicon rich stannum to become silicon stannum.

Electric stove is the electric arc that uses electrode and charging place generation and use melt to slag makes resistor and know the method with strong electric current directly, the heat energy that place of process of smelt of electric energy translate into requires, reach very high furnace temperature easily (1600 ℃ of 1450 ~ ) . Accordingly, electric stove fusion need not need a large number of flux and handle difficult frit concentrate successfully.
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