New automatic spraying system for solid reducing agent

A reducing agent and solid technology, which is applied in the field of the new solid reducing agent automatic injection system, can solve the problems of cumbersome hoisting of the tank back and forth, difficult to control the supply of materials, and high labor intensity, so as to reduce the amount of labor and achieve uniform and controllable supply. , the effect of reducing labor intensity

Active Publication Date: 2010-10-27
昆明理工精诚科技有限责任公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • New automatic spraying system for solid reducing agent

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Embodiment 1

[0035] Example 1 One 400t tilting anode furnace, equipped with two redox ports, granular reducing agent ≤ 5mm, bulk density 0.6-0.7t / m 3, water content ≤ 5%. Configure the feeding unit, fluidized pressurization unit, fluidized mixing adjustment unit, feedback adjustment injection unit, LV automatic compensation unit, safety explosion-proof unit, support weighing unit, pneumatic control station, and PLC process control unit according to the requirements of the aforementioned embodiments. . One tank corresponds to one oxidation-reduction port and one set of control system. The capacity of each tank is 4.5t of reducing agent. LV-4.5 adjustable Laval tube is used. The pressure and dosage of compressed air and compressed nitrogen are both 0.4-0.8MPa, 250m 3 Under the condition of 1 / h, the granular reducing agent can be injected automatically, the inner diameter of the reduction tube is 25mm, the depth of inserting the copper liquid is 600mm, the injection volume is 2-5t / h, and th...

Embodiment 2

[0036] Example 2 One 150t rotary anode furnace, with two redox ports, granular reducing agent ≤ 4mm, bulk density 0.6-0.8t / m 3 , water content ≤ 6%. Configure the feeding unit, fluidized pressurization unit, fluidized mixing adjustment unit, feedback adjustment injection unit, LV automatic compensation unit, safety explosion-proof unit, support weighing unit, pneumatic control station, and PLC process control unit according to the requirements of the aforementioned embodiments. . One tank corresponds to two redox ports, the capacity of the tank is 3.0t reducing agent, LV-2.5 adjustable Laval tube is adopted, the pressure and dosage of compressed air and compressed nitrogen are 0.3-0.5MPa, 150m 3 Under the condition of 1 / h, the granular reducing agent can be injected automatically, the inner diameter of the reduction tube is 25mm, the depth of insertion into the copper liquid is 500mm, the injection volume is 1-3t / h, and the reduction time of a single furnace is 0.6-1.5h. Com...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B15/14
Inventor 刘中华王勇王卫东张建坤沈强华熊振昆陈雯毛庆廖应东邓昆山张邦琪聂新如高峰史兴华刘大方蒋鸿
Owner 昆明理工精诚科技有限责任公司
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