A comprehensive utilization method of rectifier cooling water in copper electroplating workshop
A cooling water and rectifier technology, applied in the direction of instruments, electrolysis process, electrolysis components, etc., can solve the problems of increased energy consumption, increased investment, etc., to achieve the effect of improving utilization efficiency, reducing investment, and realizing the utilization of waste heat
Active Publication Date: 2016-09-28
CHINA NERIN ENG
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Problems solved by technology
Because the wet copper smelter has no waste heat boiler and cannot produce by-product steam, it is generally necessary to separately design an electric boiler to produce steam or use electricity to heat the washing water to 65-75°C, resulting in increased energy consumption and investment
Method used
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Embodiment 1
[0014] Every day before the stripping unit is turned on, fill a certain amount of clean water (normal temperature purified water or rectifier cooling water) into the water tank of the stripping unit, and heat it to 65-75°C. Connect the pressurized rectifier cooling water at the inlet of the third-stage washing (3). If the pressure is not enough, install a pipeline booster pump to adjust the flow of cooling water connected to the washing port through valves and flowmeters, and return the remaining cooling water to cooling. Tower, washing water consumption is replenished in the cooling tower. Turn on the circulation pump (9) and the circulation pump (10) simultaneously. The cooling water of the rectifier washes the cathode copper through the nozzle, and the washing water flows to the lower water tank (5) to mix with the original hot water in the water tank, and then is pumped by the circulation pump (10) to the inlet of the second-stage washing (2), and the cathode copper is pas...
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A method for comprehensive utilization of rectifier cooling water in a copper electrowinning workshop. The cooling water of a silicon rectifier in a copper electrowinning workshop is used as the washing water for the cathode copper of a stripping unit. The cathode copper is washed, and the wash water flows into the water tank. The heated washing water in the water tank is sent to the second-stage washing inlet by the circulating pump, and the cathode copper is washed by the nozzle, and the washing water flows into the water tank. The heated washing water in the water tank overflows into the water tank, and then is sent to the first-stage washing inlet by the circulating pump, and the cathode copper is washed by the nozzle, and the washing water flows into the water tank and mixes with the original hot water in it; the washing in the water tank The water is acidic and drains from the overflow. The water tank uses PLC to control the electric heating of the washing water, and the temperature is controlled at 65‑75 °C. The invention applies the cooling water of the rectifier in the copper electrodeposition workshop to the hot water for washing the cathode copper stripping unit, effectively utilizes the waste heat of the rectifier cooling water, and improves the energy utilization efficiency.
Description
technical field [0001] The invention relates to a comprehensive utilization method of rectifier cooling water in a copper electrowinning workshop, which is suitable for a copper electrowinning workshop with a stripping unit with a washing function in a warm area, and belongs to the technical field of nonferrous metal wet smelting and energy saving. Background technique [0002] Silicon rectifiers are generally used in copper electrowinning workshops for AC-DC conversion. The heating components need to be cooled during operation. Water-water or oil-water cooling is used for cooling. water or oil. The external inlet water temperature is normal temperature, and the outlet water temperature is 30-40°C. After being cooled to normal temperature by the cooling tower, it is pumped to the external water circulation inlet. The heat lost by the cooling tower has not been recycled. [0003] At present, the electrodeposition workshop of a large-scale wet copper smelter generally uses a ...
Claims
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IPC IPC(8): C25C7/06C25C7/08C25C1/12
CPCY02P10/20
Inventor 张海宝汪华陈迟陈耿涛
Owner CHINA NERIN ENG