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Curing agent containing modified nano calcium carbonate

A technology of nano calcium carbonate and curing agent, which is applied in the field of solid waste recycling, can solve the problems of recycling and recycling that fail to achieve environmental protection, energy saving, emission reduction, and circular economy.

Active Publication Date: 2014-02-05
HEFEI BAOLI ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the curing agents commonly used in the urban construction market cannot promote the harmless and effective treatment of various solid wastes. Reuse, recycling, and environmental protection, energy saving, emission reduction, and circular economy cannot be achieved.

Method used

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Embodiment Construction

[0017] A kind of curing agent containing modified nano-calcium carbonate is made by mixing the components of following parts by weight (kg):

[0018] Calcium silicate 2, ammonium chloride 1, cement 2.3, sodium sulfate 0.6, magnesium fluorosilicate 0.7, tricalcium aluminate 0.8, caustic soda 1, potassium carbonate 1.5, phosphogypsum 2.7, chitosan 2, alkyl glycoside 1, Alum 0.7, Sodium Lignosulfonate 1.3, Modified Nano Calcium Carbonate 2;

[0019] The preparation method of described modified nano calcium carbonate is:

[0020] (1) Calcinate calcium carbonate at 720°C for 2 hours, soak it with 12% acetic acid solution for 4 hours, wash it with deionized water, then soak it with 12% sodium hydroxide solution for 3 hours, and then use deionized Wash with water until neutral, dry to obtain treated calcium carbonate for subsequent use;

[0021] (2) Sodium hexametaphosphate equivalent to 2.5% of the weight of calcium carbonate is dissolved in deionized water, and then trioctyl...

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PUM

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Abstract

The invention discloses a curing agent containing modified nano calcium carbonate. The curing agent is prepared from mixing the following components in parts by weight: 1-2 parts of calcium silicate, 1-2 parts of ammonium chloride, 1.5-2.3 parts of cement, 0.3-0.6 part of sodium sulfate, 0.3-0.7 part of magnesium fluosilicate, 0.4-0.8 part of tricalcium aluminate, 1-2 parts of caustic soda, 1-1.5 parts of potassium carbonate, 2-4 parts of ardealite, 1-2 parts of chitosan, 1-2 parts of alkyl glycoside, 0.6-0.8 part of alum, 0.8-1.3 parts of sodium lignin sulfonate and 1-2 parts of modified nano calcium carbonate. In addition to hardening effect of a common curing agent, the curing agent containing modified nano calcium carbonate disclosed by the invention further has effects of decomposing harmful substances and curing heavy metals; meanwhile, the potassium carbonate and the ardealite in the formula have effects of adjusting a pH value, preventing freezing and preventing ageing, so that the hardening effect is strengthened by the modified nano calcium carbonate.

Description

technical field [0001] The invention relates to the field of solid waste recycling, in particular to a curing agent containing modified nanometer calcium carbonate. Background technique [0002] If all kinds of slag and other wastes are not effectively treated and utilized, it will be a heavy burden on the development of enterprises, a serious obstacle to social progress, and the greatest harm to the environment and ecology. The effective recycling, recycling, environmental protection and energy saving of various wastes through high-tech science and technology is the greatest contribution to the protection of human survival and long-term social development. [0003] At present, the curing agents commonly used in the urban construction market cannot promote the harmless and effective treatment of various solid wastes, recycle, recycle, and fail to achieve the effects of environmental protection, energy saving, emission reduction, and circular economy. The invention is a high...

Claims

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Application Information

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IPC IPC(8): C04B28/00
Inventor 李继平
Owner HEFEI BAOLI ENVIRONMENTAL PROTECTION TECH
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