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Process for grinding cement by using waste liquid generated in preparation of cyclohexanone from cyclohexane

A technology for preparing cyclohexanone waste liquid and cyclohexane, which is applied in the field of cement grinding, can solve the problems of single function of cement grinding aid, immature production technology, unsatisfactory efficiency and utilization rate, etc. The effect of improving efficiency and high grinding efficiency

Inactive Publication Date: 2021-06-22
山东辰磊建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A small amount of chemical additives are added to the grinding system to strengthen the grinding of materials and speed up the grinding speed of materials, so as to achieve the purpose of improving the grinding efficiency. However, at present, due to the single function of cement grinding aids and the immature production technology, its performance Utilization is not ideal

Method used

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  • Process for grinding cement by using waste liquid generated in preparation of cyclohexanone from cyclohexane
  • Process for grinding cement by using waste liquid generated in preparation of cyclohexanone from cyclohexane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of process that cyclohexane is used for the process of cyclohexanone waste liquid for cement grinding, comprises the steps:

[0023] S1. Send 100kg of Portland cement clinker to the roller press for preliminary crushing. The gap between the roller presses is 10-15mm, and then send it to the disc mill for grinding. The distance between the disc mill and the grinding disc is 0.5-2mm. , to obtain pretreated Portland cement clinker with a specific surface area of ​​415m 2 / kg;

[0024] S2. Add the pretreated Portland cement clinker to the ball mill, add 4kg of basalt, and 1kg of grinding aids for grinding to obtain a premix;

[0025] The raw materials of grinding aids include: 100kg cyclohexane cyclohexanone waste liquid, 2kg diethylene glycol, 1kg diethanolamine, 1kg sodium hexametaphosphate, 1kg enhancer;

[0026] In the enhancer, add 5kgNiCl to the reactor 2 , add 20kg of toluene and stir evenly after passing nitrogen to drive oxygen, add 10kg of 2,2'-bipyridin...

Embodiment 2

[0029] A kind of process that cyclohexane is used for the process of cyclohexanone waste liquid for cement grinding, comprises the steps:

[0030] S1. Send 100kg of Portland cement clinker to the roller press for preliminary crushing. The gap between the roller presses is 10-15mm, and then send it to the disc mill for grinding. The distance between the disc mill and the grinding disc is 0.5-2mm. , to obtain pretreated Portland cement clinker with a specific surface area of ​​450m 2 / kg;

[0031] S2. Add the pretreated Portland cement clinker to the ball mill, add 15kg of basalt, and 6kg of grinding aids for grinding to obtain a premix;

[0032] The raw materials of grinding aids include: 100kg cyclohexane cyclohexanone waste liquid, 6kg diethylene glycol, 5kg diethanolamine, 5kg sodium hexametaphosphate, 2kg reinforcing agent;

[0033] In the enhancer, add 10kgNiCl to the reactor 2 , add 60kg of toluene after blowing nitrogen to drive oxygen and stir evenly, add 20kg of 2,2...

Embodiment 3

[0036] A kind of process that cyclohexane is used for the process of cyclohexanone waste liquid for cement grinding, comprises the steps:

[0037] S1. Send 100kg of Portland cement clinker to the roller press for preliminary crushing. The gap between the roller presses is 10-15mm, and then send it to the disc mill for grinding. The distance between the disc mill and the grinding disc is 0.5-2mm. , to obtain pretreated Portland cement clinker with a specific surface area of ​​425m 2 / kg;

[0038] S2. Add the pretreated Portland cement clinker to the ball mill, add 5kg of basalt, and 2kg of grinding aids for grinding to obtain a premix;

[0039] The raw materials of grinding aids include: 100kg cyclohexane cyclohexanone waste liquid, 3kg diethylene glycol, 2kg diethanolamine, 2kg sodium hexametaphosphate, 1.2kg reinforcing agent;

[0040] In the enhancer, add 6kgNiCl to the reactor 2 , add 30kg of toluene and stir evenly after passing nitrogen to drive oxygen, add 12kg of 2,2...

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Abstract

The invention discloses a process for grinding cement by using waste liquid generated in preparation of cyclohexanone from cyclohexane. The process comprises the following steps: feeding Portland cement clinker into a roller press for preliminary crushing, controlling the gap of the roller press to be 10-15mm, and then feeding the Portland cement clinker into a disc mill for grinding, controlling the spacing of a grinding disc of the disc mill to be 0.5-2mm, so as to obtain pretreated Portland cement clinker; adding the pretreated Portland cement clinker into a ball mill, adding basalt and a grinding aid material, and grinding to obtain a premix; the grinding aid material is prepared from the waste liquid of cyclohexanone prepared from cyclohexane, diethylene glycol, diethanol amine, sodium hexametaphosphate and a reinforcing agent. The advantage of high crushing efficiency is fully exerted, the surface area of the product is larger than 510 m < 2 > / kg, the micro-aggregate effect, the acceleration effect and the activation effect can be easily generated, the mechanical property of cement is improved, meanwhile, the grinding efficiency is high, and energy consumption is low.

Description

technical field [0001] The invention relates to the technical field of cement grinding, in particular to a process for using waste liquid from cyclohexane to cyclohexanone for cement grinding. Background technique [0002] Grinding has always occupied an important position in the core of "two grinding and one burning" of cement. According to a rough analysis, 70% of the total power consumption of a cement enterprise is used for raw material and cement grinding, of which as much as 97% is useless, and only 3% of the power consumption is really used for crushing. In the past, there was a common phenomenon of light grinding in vertical kilns in my country's cement enterprises. In terms of increasing the output and quality of cement and reducing consumption, they only paid attention to the condition of the kiln and ignored the role of the grinding system. Therefore, cement grinding plays an inestimable role in the cement production process. role. [0003] A small amount of chem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/52
CPCC04B7/52
Inventor 李明辉李鑫李花香李家竟
Owner 山东辰磊建材科技有限公司
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