A precious metal recovery electric arc furnace
A precious metal recovery and electric arc furnace technology, applied in lighting and heating equipment, etc., can solve the problems of low automation, high manufacturing cost, and poor working environment, and achieve the effects of high automation, long service life and simple structure
Active Publication Date: 2018-04-03
JIANGSU LIYU ENVIRONMENTAL TECH
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Problems solved by technology
At present, there are furnaces of the same type in China, but there are several disadvantages, such as low degree of automation, simple control of power and temperature; heavy pollution, incomplete waste gas treatment, and poor sealing; some still use sulfur capture technology, polluting Big, poor working environment
The plasma arc furnace used abroad has high manufacturing costs, high pretreatment and auxiliary costs, and is also very picky and complicated to operate.
The manufacturing cost is 3 to 5 times that of similar furnaces, and the operating cost is more than 2 times
Method used
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Embodiment 1
[0010] Embodiment 1: a kind of noble metal recovery electric arc furnace comprises furnace body 1, and the center of furnace body 1 is provided with columnar graphite electrode 2, the bottom of furnace body 1 is provided with bottom graphite electrode 3, and furnace body 1 is provided with inclined downwards near the bottom. Outlet pipe 4, the middle part of the other side of furnace body 1 is provided with a slag discharge pipe 5 inclined downward at 35 degrees. The furnace body 1 is composed of refractory furnace lining 1.1, pouring layer 1.2 and water jacket 1.3 from inside to outside. The top of the furnace body 1 is provided with an openable and closable arc-shaped exhaust hood 6. The arc-shaped exhaust hood 6 is composed of two symmetrical left and right parts (6.1, 6.2). A screw conveyor 7 is arranged above the body 1, and the outlet of the screw conveyor 7 faces the top of the furnace body 1, and an exhaust pipe 8 is arranged above the opening and closing of the left an...
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An electric arc furnace for precious metal recovery, a metal smelting furnace using DC electric arc furnace technology, is used to recover precious metals in deactivated precious metal catalysts enriched with silicon-aluminum carriers, precious metal-containing tailings and slag. The top of the furnace body is provided with an openable and closable arc-shaped exhaust hood. The arc-shaped exhaust hood is composed of symmetrical left and right parts on both sides. The left and right parts rotate in opposite directions and are spliced and sealed. The mouth is facing the top of the furnace body, and there is an exhaust pipe above the opening and closing of the left and right parts of the arc-shaped exhaust hood. The exhaust pipe is connected to the dry quenching tower, bag filter, fan and exhaust chimney in sequence. Through the pretreatment and batching of materials, the capture rate of metals and the quality of slag silicate glass can be improved, so that it can meet the raw material standards of Portland cement and slag wool, comprehensively recover precious metals and carriers, and treat hazardous solid waste.
Description
technical field [0001] A metal smelting furnace using DC electric arc furnace technology, which is used to recover precious metals in silicon-aluminum carrier deactivated precious metal catalysts, precious metal-containing tailings and slag. Background technique [0002] The silicon-alumina-supported precious metal catalyst, after deactivation after the reaction, contains not only precious metals, but also harmful substances in chemical reactions, which belong to hazardous waste and need to be disposed of. Through the early pretreatment and electric arc furnace technology, while recovering and enriching precious metals, it also processes harmful substances, comprehensively recycles and utilizes, and eliminates solid waste. At present, there are furnaces of the same type in China, but there are several disadvantages, such as low degree of automation, simple control of power and temperature; heavy pollution, incomplete waste gas treatment, and poor sealing; some still use sulf...
Claims
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IPC IPC(8): F27B3/08
Inventor 宋俊峰
Owner JIANGSU LIYU ENVIRONMENTAL TECH