Recycling device and method for preparing active calcium oxide as calcium carbide raw material from carbide slag

A technology of activated calcium oxide and carbide slag, applied in the direction of calcium carbide, calcium/strontium/barium oxide/hydroxide, carbide, etc., can solve the pollution of the environment by calcium carbide slag, low recycling rate of raw materials, lack of lime, etc. problems, to achieve the effect of preventing overload operation, improving production efficiency and ensuring comprehensiveness

Pending Publication Date: 2022-07-01
内蒙古亿利化学工业有限公司
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Problems solved by technology

[0005] In order to solve the technical defects of existing technology such as lack of lime, pollution of the environment by carbide slag, and low recycling rate of raw materials during the use of calcium carbide, the present invention provides a recycling device and its method

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  • Recycling device and method for preparing active calcium oxide as calcium carbide raw material from carbide slag
  • Recycling device and method for preparing active calcium oxide as calcium carbide raw material from carbide slag
  • Recycling device and method for preparing active calcium oxide as calcium carbide raw material from carbide slag

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Embodiment

[0042] Example: as figure 1 - Figure 5As shown in the figure, a recycling device for preparing active calcium oxide calcium carbide raw materials from calcium carbide slag of the present invention includes a slurry preparation device, a hydrocyclone slag removal device, an impurity removal and refining device 6, a washing and filtering device 7, a dryer 8, a calciner 9 and The extrusion molding device 26, and the slurry preparation equipment, the hydrocyclone slag removal device, the impurity removal and refining equipment 6, the washing and filtering device 7, the dryer 8, the calcining furnace 9 and the extrusion molding device 26 are connected in sequence. The slurry preparation equipment It includes a slurry preparation tank 1 and a brown stock storage tank 3. The output end of the slurry preparation tank 1 is fixedly connected to the three brown stock storage tanks 3 through three feeding branch pipes, respectively. The three brown stock storage tanks 3 The three discha...

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Abstract

The invention discloses a cyclic utilization device and method for preparing active calcium oxide from carbide slag as a calcium carbide raw material. The cyclic utilization device comprises slurry preparation equipment, a rotary liquid slag removal device, impurity removal and refining equipment, a washing and filtering device, an extrusion forming device and a calcining furnace, the slurry preparation equipment, the rotary liquid deslagging device, the impurity removal refining equipment, the washing and filtering device, the extrusion forming device and the calcining furnace are sequentially connected, the slurry preparation equipment comprises a slurry preparation tank and coarse slurry storage tanks, and the output end of the slurry preparation tank is fixedly communicated and connected with the three coarse slurry storage tanks through three feeding branch pipes respectively; and the three coarse slurry storage tanks are respectively and fixedly communicated and connected with the input end of the rotary liquid deslagging device through three discharging branch pipes. The invention relates to a process for producing a lime raw material for calcium carbide industry by using carbide slag, which is characterized in that the carbide slag generated by acetylene production is treated to prepare the lime raw material for calcium carbide, and in addition, calcium is used as a carrier to realize carbide slag-lime-calcium carbide-carbide slag closed cycle.

Description

technical field [0001] The invention relates to the technical field of calcium carbide production, in particular to a recycling device and a method for preparing active calcium oxide from calcium carbide slag as a raw material for calcium carbide. Background technique [0002] Lime is an indispensable and important raw material for national economic construction. It is not only used in construction and road engineering, but also widely used in metallurgy, chemical industry, light industry, food, environmental protection and agriculture. In recent years, with the rapid development of steel and calcium carbide production of PVC, the lime industry has also developed rapidly. The distribution of limestone resources is uneven and there is a relative shortage of limestone. After years of mining, limestone can no longer meet the needs of the lime industry. [0003] Carbide slag is the waste residue produced by the hydrolysis of calcium carbide in the process of industrial producti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/02C01B32/942
CPCC01F11/02C01B32/942
Inventor 张国杰姜勇马永利杨峰黄文宝何秀梅王艳辉王振飞郝如意
Owner 内蒙古亿利化学工业有限公司
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