Binder additive and method for preparing calcium carbide by applying binder additive

A technology of binder and additive, applied in the field of binder additive and its application to prepare calcium carbide, can solve problems such as affecting the normal production of new calcium carbide process, low thermal strength of pellets, large amount of binder, etc., and achieve excellent bonding Performance, wide range of sources, good aging resistance

Inactive Publication Date: 2016-10-12
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the current calcium carbide new process, medium and low temperature coal tar, high temperature coal tar, tar residue, petroleum refining oil residue, etc. are mostly used as binders for briquetting of coal powder and quicklime powder; the disadvantages of these binders are : 1. The amount of binder is large, the heat resistance is poor, it is irritating, and it is easy to cause secondary pollution; 2. After using the binder, the crushing strength of coal powder and quicklime powder compacted pellets , the cold strength can still meet the transportation requirements of the pellets, but after the pellets formed by briquetting coal powder and quicklime powder are pyrolyzed by the pyrolysis device, the thermal strength of the pellets is low and the pulverization rate is large, which affects the new calcium carbide. normal production process

Method used

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  • Binder additive and method for preparing calcium carbide by applying binder additive
  • Binder additive and method for preparing calcium carbide by applying binder additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The binder additive is anthracene oil;

[0054] The mass ratio of binder additive: binder: mixture = 6:6:100.

[0055] Weigh a certain amount of long-flame coal powder and quicklime powder, wherein the size of long-flame coal powder and quicklime powder is ≤100 mesh, the mass ratio of quicklime powder and long-flame coal powder=1.5:1, and evenly mix the above two raw materials 10 minutes; add the binder accounting for 6% of the mass of the above mixture and the binder additive anthracene oil accounting for 6% of the mass of the mixture (note: the anthracene oil needs to be heated to 100 ℃ before adding), and continue to stir for 10 minutes; take out the above pellets The raw materials are put into a forming press to prepare forming pellets, the pressure of the forming equipment is 12MPa, the forming pellets are put into a pyrolysis furnace for pyrolysis to obtain pyrolysis pellets, and the pyrolysis temperature is 400°C.

[0056] After cooling, the drop strength, cold ...

Embodiment 2

[0065] The binder additive is made of waste nitrile rubber powder;

[0066] The mass ratio of binder additive: binder: mixture = 8:5:100.

[0067] Weigh a certain amount of long-flame coal powder and quicklime powder, wherein the size of long-flame coal powder and quicklime powder is ≤100 mesh, and the mass ratio of quicklime powder and long-flame coal powder=1.5:1, and evenly mix the above two raw materials 10 minutes; add binder that accounts for 5% of the mass of the above mixture and waste nitrile rubber powder of the binder additive that accounts for 8% of the mass of the above mixture (Note: the waste nitrile rubber powder should be crushed to less than 0.5mm before adding), continue to stir 10 minutes; put it into a heating screw with a temperature of 150 ° C for preheating for 10 minutes, and finally put it into a forming press to prepare forming pellets, the pressure of the forming equipment is 12 MPa, and the forming pellets are placed in a pyrolysis furnace Pyrolys...

Embodiment 3

[0077] The binder additive is made of recycled phenolic resin particles;

[0078] Binder additive: Binder Z: mass ratio of mixture = 4:8:100.

[0079] Weigh a certain amount of long-flame coal powder and quicklime powder, wherein the size of long-flame coal powder and quicklime powder is ≤100 mesh, and the mass ratio of quicklime powder and long-flame coal powder=1.5:1, and evenly mix the above two raw materials 10 minutes; add the binder accounting for 8% of the mass of the above mixture and the regenerated phenolic resin particles of the binder additive accounting for 4% of the mass of the above mixture (note: the regenerated phenolic resin particles need to be crushed to less than 0.2mm before adding), and continue to stir for 10 minutes; Put it into a heating screw with a temperature of 150 ° C for preheating for 10 minutes, and finally put it into a molding press to prepare molding pellets. The pellets were pyrolyzed, and the pyrolysis temperature was 600°C.

[0080] Af...

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Abstract

The invention discloses a binder additive and a method for preparing calcium carbide using the same. The binder additive includes one of anthracene oil, waste nitrile rubber powder or regenerated phenolic resin particles. The binder additive provided by the invention has wide sources of raw materials, so the price is low. The calcium carbide raw material made by using the binder additive not only improves the cold strength, but also improves the hot strength of the calcium carbide raw material to varying degrees, which meets the requirements of the new production process of regenerative gas high-temperature melting calcium carbide.

Description

technical field [0001] The invention belongs to the field of calcium carbide chemical industry, and particularly relates to a binder additive and a method for preparing calcium carbide by using the same. Background technique [0002] China's long-flame coal reserves are huge and cheap, but its utilization has problems such as low efficiency and serious waste. At present, the utilization rate of massive long-flame coal is relatively high, but at the same time, a large amount of powdered long-flame coal is produced, which not only causes huge waste of resources, but also produces certain environmental pollution. Therefore, the utilization of powdered long-flame coal is imminent. [0003] The new production process of regenerative gas-fired high-temperature molten calcium carbide does not require semi-coke or blue carbon, but directly uses low-rank coal and quicklime as raw materials, and adopts ultra-fine grinding technology to get rid of the "high energy consumption, high emi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J11/08C01B31/32
CPCC09J11/08
Inventor 杜少春闫琛洋吴道洪
Owner SHENWU TECH GRP CO LTD
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