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An environmentally friendly cement

An environmentally friendly, cement technology, applied in cement production and other directions, to achieve the effect of protecting national resources and resource reuse, and low manufacturing costs

Active Publication Date: 2018-08-28
HANDAN JINYU TAIHANG CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, my country limits the soluble hexavalent chromium ions in general cement products, but the existing cement inevitably has too high soluble hexavalent chromium ions

Method used

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Effect test

preparation example Construction

[0013] The preparation method of hexavalent chromium ion adsorbent of the present invention is:

[0014] 0.5mmol 5',5''',5'''''-(benzene-1,3,5-triyl)tri(([2,2'-bithiophene]-5-carboxylic acid)) (English For: 5',5''',5'''''-(benzene-1,3,5-triyl)tris(([2,2'-bithiophene]-5-carboxylic acid))) and 0.5mmol Dissolve aluminum nitrate in a mixed solvent of 5mL distilled water, 10mL ethanol and 10mL dimethylacetamide, adjust its pH to 8 with ammonia water, stir at room temperature to form a mixed solution A, and then transfer the mixed solution A to a microwave reaction Seal the bottle, put the reaction bottle into a microwave instrument, set the radiation power to 650W, the reaction time is 60 minutes, and the reaction temperature is 80°C. After the reaction, the mixed solution B is obtained; then the mixed solution B is transferred to polytetrafluoroethylene In a high-pressure reactor, put it in an oven at 160° C. for 48 hours to react, then cool down to room temperature and filter to...

Embodiment 1

[0023] A kind of environment-friendly cement, is made up of the component of following parts by weight:

[0024] 100 parts of Portland cement clinker; 20 parts of gypsum; 45 parts of fly ash; 25 parts of steel slag; 2 parts of ethylene-vinyl acetate copolymer; 0.5 parts of hexavalent chromium ion adsorbent.

Embodiment 2

[0026] A kind of environment-friendly cement, is made up of the component of following parts by weight:

[0027] 83 parts of Portland cement clinker; 25 parts of gypsum; 48 parts of fly ash; 18 parts of steel slag; 1 part of ethylene-vinyl acetate copolymer; 0.2 parts of hexavalent chromium ion adsorbent.

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Abstract

The invention relates to the field of cement building materials, in particular to an environment-friendly cement. The environment-friendly cement comprises the following components by weight: 80-120 parts of cement clinker; 12-25 parts of gypsum; 39-50 parts of fly ash; 17-30 parts of steel slag; 1-3 parts of redispersible latex powder; and 0.2-1 part of a shexavalent chromium ion adsorbent. The environment-friendly cement provided by the invention accords with the technical specification requirements of the national standard GB 31893-2015, and employs waste steel slag with high hexavalent chromium content. The environment-friendly cement has the characteristics of low making cost and simplicity, protects the national resources and recycles resources, and is in line with the national industrial development policy and the sustainable development strategy of turning "waste" into wealth.

Description

technical field [0001] The invention relates to the field of cement building materials, in particular to an environment-friendly cement. Background technique [0002] With the development of modern society, cement is more and more widely used for the absorption and stabilization / solidification of waste from various industries (including hazardous waste). In recent years, the co-processing of industrial waste, municipal waste and even hazardous waste by cement kilns has shown huge economic and technological advantages, and is considered to be the development direction of cement and waste treatment in the 21st century. Generally speaking, during the high-temperature firing process of cement clinker, most of the organic components decompose and volatilize, while most of the inorganic harmful components (mainly heavy metal ions and toxic and harmful components, such as Pb, Hg, Cd, As and Cr, etc.) will remain in the clinker, thereby increasing the content of environmentally har...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/26
CPCC04B7/243Y02P40/10
Inventor 许勤峰
Owner HANDAN JINYU TAIHANG CEMENT