Compound binder and method of preparing mixed pellets for producing calcium carbide

A technology of binder and quicklime powder, which is applied in the direction of adhesives, adhesive types, polyether adhesives, etc., can solve the problems of slow material transfer speed, low chemical reaction speed, high loss of organic carbon, etc., and achieve energy saving Effects of emission reduction, improvement of softening point, and increase of cohesiveness

Inactive Publication Date: 2017-09-05
SHENWU ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrothermal method uses coke as the carbon raw material, which is generally prepared by coal coking, and calcium oxide is used as the calcium raw material, which is generally obtained by calcining limestone. The process is long, consumes a lot of power, and has high organic carbon loss and serious pollution
At the same time, the raw materials used in the electrothermal method are block raw materials, the contact area between raw materials is small, the mass transfer speed of materials is slow, and the chemical reaction speed is low.

Method used

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  • Compound binder and method of preparing mixed pellets for producing calcium carbide

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Experimental program
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Effect test

Embodiment 1

[0055] (1) Composite binder: heat the asphalt to 200 degrees Celsius to obtain molten asphalt, then add 15wt% rubber powder with a particle size below 0.1mm to it, stir at a constant temperature for 2 hours, and then add 10wt% rubber powder with a particle size of Polyethylene glycol below 0.1 mm was stirred at constant temperature for 2 hours, cooled, and ground to obtain a composite binder.

[0056] (2) Method for preparing mixed pellets for production of calcium carbide

[0057] First, the semi-coke is crushed and dried sequentially to obtain dry semi-coke powder with a fixed carbon content of 78.27wt%, a moisture content of 5.66wt%, and a particle size of less than 1mm; then the quicklime is crushed to obtain a calcium oxide content of Quicklime powder with 89.39wt%, 3.14% burning loss and particle size below 1mm; weigh 1000g of dry semi-coke powder, 1600g of quicklime powder and 130g of composite binder, place them in a mixing device, and mix for 10min to obtain a mixed m...

Embodiment 2

[0059] (1) Composite binder: heat the asphalt to 200 degrees Celsius to obtain molten asphalt, then add 25wt% rubber powder with a particle size below 0.1mm to it, stir at a constant temperature for 2 hours, and then add 5wt% rubber powder with a particle size of Polyethylene glycol below 0.1 mm was stirred at constant temperature for 2 hours, cooled, and ground to obtain a composite binder.

[0060] (2) Method for preparing mixed pellets for production of calcium carbide

[0061] First, the semi-coke is crushed and dried sequentially to obtain dry semi-coke powder with a fixed carbon content of 78.27wt%, a moisture content of 5.66wt%, and a particle size of less than 1mm; then the quicklime is crushed to obtain a calcium oxide content of Quicklime powder with 89.39wt%, 3.14% burning loss and particle size below 1mm; weigh 1000g of dry semi-coke powder, 1600g of quicklime powder and 260g of composite binder, place them in a mixing device, and mix for 10min to obtain a mixed ma...

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Abstract

The invention discloses a composite binder and a method for preparing mixed pellets for calcium carbide. The composite binder includes asphalt, rubber powder and polyethylene glycol, and the asphalt, the rubber powder and the The mass ratio of polyethylene glycol is 100:(10-30):(5-10). The composite binder can guarantee the requirements of the production of calcium carbide for raw material pellets into the furnace and the requirements of heat intensity during the production process.

Description

technical field [0001] The invention belongs to the field of calcium carbide smelting, in particular, the invention relates to a composite binder and a method for preparing mixed pellets for producing calcium carbide. Background technique [0002] Calcium carbide is an important acetylene chemical intermediate, and calcium carbide acetylene can be used to synthesize various organic products such as benzene, rubber, polyvinyl chloride, and polyacetylene. After more than 60 years of improvement and development, calcium carbide industry has become an indispensable basic chemical raw material industry in my country. At the same time, my country's energy structure of "rich in coal, poor in oil, and low in gas" determines that calcium carbide plays an irreplaceable and important role in my country's economic and social development. [0003] The main method of industrial production of calcium carbide is the electrothermal method, that is, heating and smelting massive coke and calc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J195/00C09J121/00C09J171/02C01B32/942
CPCC09J195/00C08L2201/08C08L2205/03C08L21/00C08L71/02
Inventor 祁娟刘涛邓鑫赵飞翔高建吴道洪
Owner SHENWU ENVIRONMENTAL TECH CO LTD
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