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Cement raw material additive, application thereof and cement production process

A cement raw material and additive technology, applied in cement production, etc., can solve problems such as high environmental pressure, high COD, and environmental impact, and achieve the effects of improving material fluidity, increasing output, and realizing comprehensive utilization of resources

Active Publication Date: 2019-05-31
湖南昌迪环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The total amount of waste water in the country is about 1 million tons per year (40% concentration meter), and the COD is high, so it cannot be directly biochemically treated. The currently widely used incineration method not only has a large investment and energy consumption, but also has a certain environmental impact. It is also a waste of resources
Paper mill sulfite waste liquid and soap waste liquid are also industrial waste lye with high yield, which need to be treated as waste water, and the environmental pressure is high
However, there are few reports on the comprehensive utilization of these industrial alkaline waste lye resources, especially in the presence of additives and their applications in cement raw meal

Method used

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  • Cement raw material additive, application thereof and cement production process
  • Cement raw material additive, application thereof and cement production process
  • Cement raw material additive, application thereof and cement production process

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Experimental program
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Effect test

Embodiment SA1

[0051] Liquid A (100 parts by weight) was mixed with raw meal to be ground with cement at a ratio of 0.03% by weight for raw meal grinding and calcination. The specific conditions and results are shown in Table 1.

Embodiment SA2

[0053] Liquid A (100 parts by weight) was mixed with raw meal to be ground with cement at a ratio of 0.1% by weight for raw meal grinding and calcination. The specific conditions and results are shown in Table 1.

Embodiment SA3

[0055] A solution (100 parts by weight) is added to 70 parts by weight of an alkalinity enhancer (sodium hydroxide) as a cement raw meal additive, and the raw meal to be ground is mixed with cement in a proportion of 0.2% by weight for raw meal grinding and calcination. The specific conditions and results are shown in Table 1.

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Abstract

The invention relates to a cement raw material additive, application thereof and a cement production process. The cement raw material additive comprises industrial waste alkali liquid and an alkalineimprover. The cement raw material additive can recycle the industrial waste alkali liquid during cement raw material grinding and cement production and has good comprehensive effects of increasing yield, lowering coal consumption, improving raw material burnability and desulfurizing.

Description

technical field [0001] The present disclosure relates to a cement raw meal additive, its application and a cement production process. Background technique [0002] Cement production is an industry with low energy utilization rate and high energy consumption. my country's cement output in 2016 was 2.3 billion tons, accounting for more than half of the global output. The cement production process is divided into three stages, that is, calcareous raw materials, clay raw materials, and a small amount of corrected raw materials (a certain amount of coal is also added to shaft kiln production). After crushing or drying, they are blended in a certain proportion, ground, and Preparation of raw meal with suitable composition and uniform quality is called the first stage: raw meal grinding; then the ground raw meal is added to the cement kiln to be calcined until it is partially melted, and the cement clinker with calcium silicate as the main component is obtained. The raw material i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/42C04B7/36C04B7/24
CPCY02P40/10
Inventor 钱文斌蒋卫和
Owner 湖南昌迪环境科技有限公司
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