New automatic spraying system for solid reducing agent

Abstract

The invention discloses a new automatic spraying system for a solid reducing agent. The system is provided with a feeding unit, a fluidized boosting unit, a fluidized hybrid adjusting unit, a feedback adjustment spraying unit, an LV automatic compensation unit, a supporting and weighing unit, a pneumatic control station and a PLC process control unit, wherein the reducing agent enters the fluidized boosting unit through the feeding unit by means of the dead weight and forms initial gas-solid two-phase flow in the fluidized hybrid adjusting unit after being boosted to flow out; the feedback adjustment spraying unit adjusts the proportion of the initial two-phase flow to meet the requirements of the reducing technology; the LV automatic compensation unit detects and rapidly responds to the gas-solid two-phase flow to ensure no recharging of liquid copper; the pneumatic control station distributes compressed air, nitrogen gas and oxygen required by the process and a meter gas source required for controlling each unit to each point; and the PLC process control unit programs, processes the switching value and the analog quantity, sends a control signal and gives an instruction to the feeding unit to ensure that the feeding unit is in a normal operating state. The automatic spraying system can realize automatic spraying of the solid reducing material and ensure uniform and controllable material supply.

Description

technical field [0001] The invention relates to a new solid reducing agent automatic injection system. That is, in the copper fire refining process, the coal-based reducing agent is sprayed into the copper liquid of the rotary or tilting anode furnace through the spray gun by using pneumatic conveying technology, automatic control technology and Laval pipe. Background technique [0002] In the metallurgical industry, the use of pneumatic conveying technology to spray solid bulk materials into the reaction system has been widely used. For example, spray metallurgy and ladle powder spraying (commonly used powders are: metal types such as Mg, CaC 2 , rare earth, etc., non-metal type such as synthetic slag, CaO, S, etc., mixed type (metal type and non-metal type mixed), blast furnace uses coal instead of coke (powder is coal), and the equipment and control used are mature. [0003] The coal-based reductant used in copper fire refining, such as the coal-based solid reductant in...

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Problems solved by technology

[0004] The purpose of the present invention is to propose an automatic solid reducing agent injection system for rotary or tilting anode furnaces to solve the problems of many operators, high labor intensity, difficult control of feeding materials, cumbersome hoisting of the tank back and forth in the prior art. unsafe question

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