Invention Patent

The present invention relates to the field of metallurgical technology, particularly to the purification process of copper electrolyte. In the purification process of copper electrolyte of the present invention, before the impurity removal by sulfide precipitation, a reducing agent is used to reduce the copper electrolyte to reduce As(V) and Sb(V) in the electrolyte to As(III) and Sb(III) respectively; at the same time, oxidizing substances in the solution are reduced to avoid the reaction of oxidizing substances with hydrogen sulfide, reduce the consumption of hydrogen sulfide, reduce the cost of impurity removal, and improve the efficiency of purification and impurity removal of the electrolyte.

The present invention relates to the technical field of smelting equipment, especially a circulating water system for a two-furnace smelting, including a reservoir, a cooling module, a two-furnace smelting device, a fault water supply module and a control module. The present invention can accurately judge the circulating water pressure of the two-furnace smelting device, and prevent equipment damage and safety accidents caused by insufficient circulating water pressure.

The present invention belongs to the technical field of metallurgy and mineral processing, and specifically discloses a mineral processing method for copper smelting slag. The present invention is not only applicable to new systems, but also to the transformation of old systems, has strong operability, and simultaneously improves the recovery rates of copper and iron in the mineral processing of copper smelting slag, with low energy consumption.

The present invention relates to the technical field of raw material proportioning equipment, especially a control system for frequency control of measuring belts in zoned areas of a double-layer structure belt, including a pre-feeding belt, a measuring belt and a control module. The present invention adopts sectional control of the measuring belt based on the flow value of the given flow, reducing the measurement error caused by tare deviation.

The present invention discloses a purification method for waste liquid from copper electrolysis, including copper removal by electrowinning → diffusion dialysis → lime neutralization → alkali neutralization → water treatment and reuse. This method has the characteristics of good safety, simple process, low cost, good environment and high copper ion conversion rate. It can efficiently remove metals such as copper, arsenic, nickel, antimony and bismuth, and realize resource utilization.

The present invention discloses a method for the synergistic resource treatment of copper electrolyte purification and waste acid. It solves the safety hazard problem of hydrogen sulfide in arsenic removal by sulfidation, overcomes the deficiencies of the existing technology, and provides a good working environment; solves the problem of stockpiling of arsenic sulfide slag, which is a hazardous waste, in the arsenic removal by sulfidation method; treats waste with waste and makes rational use of copper in the waste electrolyte.

The present invention relates to the technical field of smelting equipment, especially a protection system for an oxygen lance rotating motor, including a load circuit, a control circuit, a motor protector and a remote control module. The load circuit includes a load power supply, a driving motor and the first contact of the contactor, and is used for driving the motor. The control circuit includes a control power supply, a contactor coil, a motor control module and a protection contact. The motor control module is used for the control of the load circuit to start or stop the driving motor. Both ends of the protection contact are electrically connected to the motor control module and the live wire end of the control power supply respectively. The motor protector is electrically connected to the protection contact to perform overload protection and reset operations on the driving motor. The remote control module is electrically connected to the communication port of the motor control module. The present invention can reset the motor in time after the fault is handled, and can cut off the power supply in time when the motor is overloaded.

The present invention belongs to the technical field of metallurgical slag treatment, and specifically discloses a slow cooling system for copper smelting slag and its slow cooling method. The slow cooling system includes a slag slow cooling field, a gantry crane and a sprinkler gantry crane that can move along the length direction of the slag slow cooling field. The slag slow cooling field is divided into a water circulation area, a slag slow cooling area and a slag crushing area. The water circulation area is equipped with a circulating water cooling system, and the side of the slag slow cooling field is provided with a process water channel. The sprinkler gantry crane is equipped with a sprinkler beam and a spray pump. The circulating water cooling system supplies water to the spray nozzles through the process water channel, the spray pump, the main spray pipe and the branch spray pipe. The slow cooling system, through the combination of the gantry crane, the sprinkler gantry crane and the circulating water cooling system, reduces the occupied area for slag slow cooling, and has high efficiency, good effect and low energy consumption for slag slow cooling. Meanwhile, the present invention also provides a slow cooling method. This slow cooling method improves the cooling effect and the hardness of the cooled slag is low by adopting the above-mentioned slow cooling system for high-intensity intermittent spraying.