Active calcium oxide with calcium carbide dreg as raw material, desulfurizing agent, calcium carbide raw material and preparation method of active calcium oxide

A technology of active calcium oxide and calcium carbide slag, which is applied in the direction of calcium/strontium/barium oxide/hydroxide, etc., can solve problems such as adverse effects on the environment, and achieve the effects of protecting the environment, improving purity and saving limestone mineral resources.

Active Publication Date: 2016-09-21
新疆中泰创安环境科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a kind of active calcium oxide, desulfurizer, calcium carbide raw material and preparation method thereof with calcium carbide slag as raw material, whi

Method used

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  • Active calcium oxide with calcium carbide dreg as raw material, desulfurizing agent, calcium carbide raw material and preparation method of active calcium oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 : as attached 1 As shown, the activated calcium oxide using calcium carbide slag as raw material is obtained by the following preparation method: the first step is to obtain a primary wet slag after pressure filtering the calcium carbide slag, and the mass percentage of water in the primary wet slag is 38% to 42% , the secondary wet slag is obtained after the primary wet slag is air-dried, and the mass percentage of water in the secondary wet slag is 30% to 35% In the second step, the secondary wet slag is crushed for the first time; in the third step, the calcium carbide slag powder is obtained after drying the secondary wet slag after the primary crushing, and the mass percentage of water in the calcium carbide slag powder is 10% Following; in the fourth step, the calcium carbide slag powder is subjected to gas-solid separation to obtain solid powder and gas material, and the solid powder is passed through the air separation impurity remov...

Embodiment 2

[0029] Example 2 : this active calcium oxide with calcium carbide slag as raw material obtains by the following preparation method: the first step obtains a wet slag after pressing the calcium carbide slag, and the mass percentage of water in the wet slag is 38% or 42% , the secondary wet slag is obtained after the primary wet slag is air-dried, and the mass percentage of water in the secondary wet slag is 30% or 35% In the second step, the secondary wet slag is crushed for the first time; in the third step, the calcium carbide slag powder is obtained after drying the secondary wet slag after the primary crushing, and the mass percentage of water in the calcium carbide slag powder is 10% Following; in the fourth step, the calcium carbide slag powder is subjected to gas-solid separation to obtain solid powder and gas material, and the solid powder is passed through the air separation impurity remover to obtain the impurity removal material, and the particle size...

Embodiment 3

[0030] Example 3 : this active calcium oxide with calcium carbide slag as raw material obtains by the following preparation method: the first step obtains a wet slag after pressing the calcium carbide slag, and the mass percentage of water in the wet slag is 38% , the secondary wet slag is obtained after the primary wet slag is air-dried, and the mass percentage of water in the secondary wet slag is 30% In the second step, the secondary wet slag is crushed for the first time; in the third step, the calcium carbide slag powder is obtained after drying the secondary wet slag after the primary crushing, and the mass percentage of water in the calcium carbide slag powder is 5% ; The fourth step is to obtain solid powder and gas material after the gas-solid separation of the carbide slag powder, and obtain the impurity removal material after the solid powder is removed by the air separation impurity remover, and the particle size of the impurity removal material is 0.1 ...

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Abstract

The invention relates to the technical field of active calcium oxide, desulfurizing agents, calcium carbide raw materials and preparation methods of active calcium oxide, in particular to active calcium oxide with calcium carbide dreg as a raw material, a desulfurizing agent, a calcium carbide raw material and a preparation method of active calcium oxide. The active calcium oxide with the calcium carbide dreg as the raw material is obtained through the following steps: firstly, the calcium carbide dreg is subjected to filter pressing, and primary wet dreg is obtained. According to the active calcium oxide with the calcium carbide dreg as the raw material, the desulfurizing agent, the calcium carbide raw material and the preparation method of active calcium oxide, the calcium carbide dreg is turned into wealth, accordingly, the problem of adverse influence on the environment due to stacking of a large amount of calcium carbide dreg is solved, and the environment is effectively protected; besides, utilization of mineral resources such as limestone is reduced, the mineral resources such as the limestone are saved, and the idea of harmonious development of economic development and environment protection is realized; meanwhile, according to the active calcium oxide with the calcium carbide dreg as the raw material, the desulfurizing agent, the calcium carbide raw material and the preparation method of active calcium oxide, the purity of the desulfurizing agent can be improved; moreover, the cost of the calcium carbide raw material for producing calcium carbide is lower, and industrial application prospect is realized.

Description

technical field [0001] The invention relates to the technical field of activated calcium oxide, desulfurizer, calcium carbide raw material and preparation method thereof, and relates to activated calcium oxide, desulfurizer, calcium carbide raw material and preparation method thereof using carbide slag as raw material. Background technique [0002] Carbide slag is a by-product of the hydrolysis reaction during the production of polyvinyl chloride (PVC) by the calcium carbide method, and its main component is calcium hydroxide. According to our company's PVC output (1.5 million tons per year), about 3 million tons of calcium carbide slag with a water content of 38% to 40% is produced every year. Carbide slag is a bulk industrial solid waste in our unit. The current treatment method is to cooperate with cement plants to produce cement clinker with carbide slag. However, with the change of economic situation, the cement industry has overcapacity and the cement plant cannot prod...

Claims

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Application Information

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IPC IPC(8): C01F11/02C01B31/32
CPCC01F11/02C01P2004/61C01P2006/80
Inventor 韩巍帕尔哈提·买买提依明赵永禄杨秀玲王彦波樊庆霈刘涛郭建威潘杰王凯瑞李卫国
Owner 新疆中泰创安环境科技股份有限公司
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