Water-soluble polymer grinding aid prepared from papermaking waste liquor and preparation method thereof
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A technology of water-soluble polymer and papermaking waste liquid, which is applied in the new field of cement industry to achieve the effect of improving utilization rate, strength, flexural strength and compressive strength
Inactive Publication Date: 2012-01-11
刘长福
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[0006] In order to solve the problems existing in the existing liquid grinding aids, the purpose of the present invention is to provide a production method for producing water-soluble polymer grinding aids from papermaking waste liquid with a new structure and concept, which saves energy and is beneficial to environmental protection
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Embodiment 1
[0070] The mass ratio fraction of the present embodiment is as follows:
[0071] Basic reaction material: 26% (calculated on a dry basis of 100% solid content), the basic reaction material is straw pulp papermaking waste liquid (concentrated liquid, the used pulp raw material of straw pulp papermaking waste liquid is wheat straw), and the solid content is 42%;
[0072] Sulfonating agent: 4%, the sulfonating agent is sodium bisulfite;
[0073] Graft modifier: 6%, the graft modifier is methacrylic acid;
[0074] Grafting initiator: 0.2%, the grafting initiator is potassium permanganate-sulfuric acid system, the mass ratio of potassium permanganate and sulfuric acid is 1:2; water-soluble polymerization reaction material: 12%, water-soluble polymerization reaction material It is a mixture of allyl polyoxyethylene ether, polyethylene glycol monomethyl ether acrylate, and allyl sulfonic acid, and their mass ratio is allyl polyoxyethylene ether: polyethylene glycol monomethyl ether ...
Embodiment 2
[0088] The proportioning number of present embodiment is as follows:
[0089] Basic reaction material: 22% (calculated on a dry basis of 100% solid content), the basic reaction material is a mixture of reed pulp papermaking waste liquid (concentrate) and wood pulp papermaking waste liquid (concentrate), with a solid content of 44%;
[0090] Sulfonating agent: 6%, the sulfonating agent is sodium metabisulfite;
[0091] Graft modifier: 5%, the graft modifier is acrylic acid;
[0092] Grafting initiator: 0.1%, the grafting initiator is ceric ammonium sulfate-potassium persulfate system, the mass ratio of ceric ammonium sulfate and ammonium persulfate is 1:3;
[0093] Water-soluble polymerization reaction material: 18%, water-soluble polymerization reaction material is methacrylic acid, allyl polyoxyethylene ether, polyethylene glycol monomethyl ether acrylic acid ester, 2-acrylamide-2-methylpropanesulfonic acid A mixture whose mass ratio is methacrylic acid: allyl polyoxyethyle...
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Abstract
The invention discloses a water-soluble polymer grinding aid prepared from papermaking waste liquor and a preparation method thereof. The water-soluble polymer grinding aid comprises the following raw materials: a basic reaction material, a sulfonating agent, a graft modification agent, a graft initiating agent, a water-soluble polymerization reaction material, a copolymerization initiator, a cross-linking agent, a neutralizing agent and softened water. The manufacture method comprises the following steps: putting the basic reaction material into a reaction kettle; then, adding the sulfonating agent for sulfonating; then adding the graft modification agent and the graft initiating agent for graft modification to obtain a graft modification substance; then, adding the water-soluble polymerization reaction material and the copolymerization initiator to obtain a water-soluble copolymer; adding the cross-linking agent for crosslinking reaction to obtain an interpenetrating network water-soluble polymer; and finally, adding the neutralizing agent for neutralizing to obtain the grinding aid. According to the invention, the papermaking waste liquor serves as the main raw material, pollution caused by the papermaking waste liquor is reduced, which is favorable for environment protection, energy saving and cost reduction; and substantial economic benefit and social benefit can be brought for enterprises and society.
Description
[0001] Field [0002] The invention belongs to the new technology of the cement industry, relates to the fields of environmental protection, energy saving and emission reduction, and industrial waste water utilization, in particular to a water-soluble polymer grinding aid for papermaking waste liquid production and a manufacturing method. technical background [0003] Cement grinding aids are additives used by cement plants in the process of cement production to increase output, quality and reduce grinding power consumption. Since Goddard first obtained a patent in Britain as a grinding aid in 1939, there have been dozens of substances used as grinding aids successively. Japan, the United States, the European Union, Southeast Asia and the former Soviet Union countries have already used cement Grinding aids are commonly used in grinding. Due to the huge cement grinding aid market in China, foreign companies such as Basf of Germany, Fosroc of Britain, Mapei of Italy, W.R.Grace ...
Claims
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