Cement additive and preparation method thereof

A technology of cement additives and coconut oil acid, applied in the field of cement additives, can solve problems such as single performance and poor product stability, and achieve the effects of reducing production costs, enhancing cement fluidity and improving cement quality

Inactive Publication Date: 2011-01-26
SHANGHAI DETONG ENERGY & ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the products on the market are simply mixed products of triethanolamine + sodium bicarbonate + sodium chloride, which have single performance, poor product stability, and certain limitations in enhancing and grinding-aiding effects.

Method used

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  • Cement additive and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add water 12kg in reactor, add coconut oleic acid soap 5kg, synthetic polymer polycarboxylate 6kg, sodium silicate 5kg, sodium polyphosphate 2kg, m-phenylenediamine 6kg, stir at normal temperature and pressure;

[0033] Then add naphthalenesulfonate formaldehyde condensate 6kg, diethylene glycol 3kg in reactor, stir at normal temperature and pressure;

[0034] Add 15 kg of triethanolamine, 15 kg of triisopropanolamine, 5 kg of ethylene glycol, and 8 kg of polyethylene glycol monomethyl ether into the reaction kettle, and stir at normal temperature and pressure;

[0035] Add 2 kg of formic acid, adjust the pH value to 6.5, add 10 kg of ammonium acetate and stir at normal temperature and pressure to obtain 100 kg of cement additive of the present invention.

Embodiment 2

[0037] Add 11.5kg of water in the reaction kettle, add coconut oleic acid soap 4kg, synthetic polymer polycarboxylate 5kg, sodium silicate 3kg, sodium polyphosphate 1kg, m-phenylenediamine 7kg, stir at normal temperature and pressure;

[0038] Then add naphthalenesulfonate formaldehyde condensate 5kg, diethylene glycol 4kg in reactor, stir at normal temperature and pressure;

[0039] Add 20kg of triethanolamine, 18kg of triisopropanolamine, 6kg of ethylene glycol, and 6kg of polyethylene glycol monomethyl ether into the reaction kettle, and stir at normal temperature and pressure;

[0040] Add 1.5 kg of formic acid, adjust the pH value to 6.8, add 8 kg of ammonium acetate and stir at normal temperature and pressure to obtain 100 kg of cement additive of the present invention.

Embodiment 3

[0042] Add water 29kg in reactor, add coconut oleic acid soap 6kg, synthetic macromolecule polycarboxylate 8kg, sodium silicate 12kg, sodium polyphosphate 6kg, m-phenylenediamine 12kg, stir at normal temperature and pressure;

[0043] Then add naphthalenesulfonate formaldehyde condensate 12kg, diethylene glycol 6kg in reactor, stir at normal temperature and pressure;

[0044] Add 30 kg of triethanolamine, 30 kg of triisopropanolamine, 16 kg of ethylene glycol, and 10 kg of polyethylene glycol monomethyl ether into the reaction kettle, and stir at normal temperature and pressure;

[0045] Add 3 kg of formic acid, adjust the pH value to 6.8, add 20 kg of ammonium acetate and stir at normal temperature and pressure to obtain 200 kg of the cement additive of the present invention.

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Abstract

The invention discloses a cement additive and a preparation method thereof. The preparation method comprises the following steps: reacting coconut nascent soap, synthetic polymer polycarboxylic acid salt, sodium polyphosphate, sodium triphosphates, m-phenylenediamine, NNO, diglycol, triethanolamine, triisopropanolamine, glycol, poly(ethylene glycol methyl ether), formic acid, ammonium acetate and water with while stirring under the conditions of normal temperature and normal pressure, thus obtaining the cement additive. The cement additive of the invention is added in the cement flour grinding process, thus effectively solving the problem of reduced mill flour grinding efficiency caused by the phenomena of ball packaging and forge cladding resulted from that cement particles are agglomerated due to molecular force and electrostatic force and adhered on forging steel and liner plates. The additive of the invention has the advantages of improving the flour grinding production efficiency, increasing the cement flowability, enhancing the cement strength and lowering the production cost.

Description

technical field [0001] The invention belongs to cement additives, in particular to a cement additive for improving cement quality, enhancing cement fluidity, improving mill grinding efficiency, and increasing the amount of mixed materials and a preparation method thereof. Background technique [0002] Cement additives are divided into cement grinding aids, quality improvers, and functional additives. In the cement production process, when the cement particles are ground to an average particle size of 14 μm or less, agglomeration occurs due to molecular force and electrostatic force generated by Si-O and Ca-O bond breakage during the crushing process, and adheres to the steel ball and lining. On the plate, the phenomenon of wrapping balls and forging appears, which reduces the grinding efficiency of the mill. In order to overcome the unfavorable factors in the cement grinding process, cement grinding aids are usually added to the cement grinding process to improve production...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/32C04B103/52
Inventor 李建国
Owner SHANGHAI DETONG ENERGY & ENVIRONMENTAL PROTECTION TECH
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