CN103449752B - Polyether composite cement grinding aid - Google Patents

Abstract

The invention provides a polyether composite cement grinding aid. In each kilogram of the cement grinding aid, polyether, polyol and sodium gluconate are blended according to the mass ratio of 1: 1: 0.1. In the polyol, the mass percentage of each of glycerol, ethylene glycol, diethylene glycol, sorbitol and isopropanol is 20% respectively. After the cement grinding aid provided by the invention is used, the cement grinding performance can be improved, the cement quality can be improved, the grinding speed can be increased, and the cement strength can be increased. The polyether composite cement grinding aid is suitable for being used as a grinding aid added in a cement grinding process.

Description

A kind of polyethers composite cement grinding aid

Technical field

What the present invention proposed is the grinding aid for cement grinding, specifically a kind of polyethers composite cement grinding aid.

background technology

Through partial monopoly retrieval, typical cement grinding aid patent is selected as follows:

2010106228367, one can improve cement mill mill efficiency, the enhanced liquid cement grinding aid of refinforced cement intensity, by trolamine, tri-isopropanolamine, Diethylene Glycol, sodium formiate, sodium acetate, sodium lignosulfonate, desugar molasses, glycerol and water composition, the content (weight percentage) of each component is: trolamine: 10%～20%, tri-isopropanolamine: 5%～10%, Diethylene Glycol: 3%～5%, sodium formiate: 2%～5%, sodium acetate: 2%～5%, sodium lignosulfonate: 1%～3%, desugar molasses 10%～20%, glycerol: 5%～10% all the other be water.

2011100978477.2, the invention discloses a kind of cement grinding aid, component composition (weight percentage) is: trolamine 8-20%, tri-isopropanolamine 0-10%, glycol byproduct 8-20%, synthetic glycerine 0-10%, molasses 0-25%, wooden calcium 0-5%, polyurethane(s) 0-15%, Gelucystine 0-10%, sorbyl alcohol 3-5%, Xylo-Mucine 5-10%, citric acid 0-5%, silica flour 0-5%, flyash 0-5%, all the other are water.

20121009800.1, the invention also discloses its preparation method.This grinding aid can effectively improve cement grinding mill unit-hour output, reduces energy consumption, can also significantly improve cement performance, cement, without adverse side effect, in the situation that keeping strength of cement grade constant, is reduced to cement clinker consumption at 4%-10%, improve manufacture of cement unit-hour output 6%-10%, respond well.The inventive method technique is special, adopts supersound process part material, makes the grinding aid excellent property making.A kind of cement grinding aid, relates to technology of producing cement field, and the component that this grinding aid comprises and the mass fraction of each component are: water, 55～65%; Sodium Nitrite, 10～12%: Industrial Salt, 8～10%: wooden calcium, 3～5%; Sodium-acetate, 3～5%; Trolamine, 5～8%; Ethylene glycol, 3～5%.Cement grinding aid provided by the invention is in accomplishing to save power consumption, improve quality and the performance of cement, in performance, reach the level of same kind of products at abroad, in cost, price lower than the level of same kind of products at abroad, reduce the consumption of cement clinker, improve strength of cement.

2012102978607 the invention provides a kind of cement grinding aid, comprise following component by weight ratio: 10～15 parts of trolamines, 5～8 parts of sodium acetates, 5～10 parts, Sulfothiorine, 10～13 parts, sodium-chlor, 6～8 parts, urea, 2～6 parts of ethylene glycol, 8～15 parts, molasses, 3～6 parts, xylogen, 0.2～0.5 part of tween.Cement grinding aid volume of the present invention is low, reinforced effects good, and cost is low.

The effect of cement grinding aid is the performance that can contribute to cement grog grinding process, improves grinding quality, and the composition wherein adding is useful and harmless to finished cement.

According to the disclosed technology contents of above patent, main component, mainly contain organic alcoholate, metallic salt, ammonia composition, molasses, lignin water reducer and tensio-active agent.Wherein metallic salt plays the effect that disperses and increase cement minerals composition, alcoholate plays lubricated effect, the composition of ammonia easily with alcoholate generation aminating reaction, molasses play the effect of slow setting, xylogen plays the effect of diminishing, and tensio-active agent plays the effect that reduces intermolecular attraction.

For cement grinding aid, alcohols thing can play early strong effect to cement, and metallic salt plays the effect that disperses and increase cement ore material content.These materials, can play a role improving strength of cement and improving performance, but not obvious to mechanical friction effect and the lubrication of cement grog grinding.

So although people have proposed formula not of the same race in order to improve cement grinding quality, due to the difference that starting material are selected, its performance is also different, can't reach desirable effect.

summary of the invention

In order further to improve the performance of cement grinding aid, the present invention proposes a kind of polyethers composite cement grinding aid.This grinding aid is mixed in proportion and is formed by polyethers, polyvalent alcohol and Sunmorl N 60S.Solve the technical problem that improves cement grinding aid use properties.

The scheme that technical solution problem of the present invention adopts is:

In every kg water cement grinding aids, polyethers, polyvalent alcohol and Sunmorl N 60S mass ratio are pressed 1:1:0.1 allotment;

In described polyvalent alcohol, by mass percentage, glycerol, ethylene glycol, Diethylene Glycol, Sorbitol Powder, Virahol respectively account for 20%.

Positively effect, cement grinding aid of the present invention can improve cement grinding performance after using, and improves cement quality, improves grinding speed, increases strength of cement.The suitable grinding aid as adding in cement pulverizing course uses.

Embodiment

In every kg water cement grinding aids, polyethers, polyvalent alcohol and Sunmorl N 60S mass ratio are pressed 1:1:0.1 allotment;

In described polyvalent alcohol, by mass percentage, glycerol, ethylene glycol, Diethylene Glycol, Sorbitol Powder, Virahol respectively account for 20%.

In component of the present invention, utilize froth breaking, breakdown of emulsion, dispersion, infiltration, emulsification and the viscosity characteristics of polyethers, sticky characteristic, low-temperature fluidity, oilness, thermo-oxidative stability and the water-soluble and oil-soluble performance of pressing.

Utilize the morning of polyvalent alcohol strong, improve the effect of cement quality performance.

Utilize the delayed coagulation of Sunmorl N 60S, improve the effect of cement performance.

Utilize as above feed composition as cement grinding aid, not only can improve cement grinding performance, also can be useful to the quality of raising cement.

Through test in place, adopt cement grinding aid of the present invention compared with traditional cement grinding aid, can improve grinding speed 10%, three days intensity of cement on average improves 4.68 MPas, and within 28 days, ultimate compression strength improves 7.86 MPas.Use the cement concrete performance of cement grinding aid of the present invention to have significant improvement.

Testing data: table 1

In cement ingredient, grog 78%, slag 5%, Wingdale 5%, slag 5%.

Experimental data table 2

In cement ingredient, in first group, grog 75%, slag 8%, Wingdale 3%, flyash 4%, zeolite 5%, gypsum 5%; In second group, grog 49%, slag 14%, Wingdale 10%, flyash 8%, zeolite 8%, gypsum 3%.

Experimental data table three

In cement ingredient, grog 75%, slag 8%, Wingdale 5% slag 6.5% gypsum 5.5%.

Data statistics:

Table 1 group, average 4.8 MPa that increase of three days compressive strength rates of cement briquette contrast, cement briquette in 28 days 8.2 MPa that gain in strength.

Second group, average 5.15 MPa that increase of 3 three days compressive strength rates of cement briquette contrast, cement briquette in 28 days 7.7 MPa that gain in strength.

The 3rd group, the contrast of 3 days compressive strength rates of cement briquette increases by 3.5 MPa, cement briquette in 28 days 7.5 MPa that gain in strength.

Weighted mean: 3 days ultimate compression strength improvement values of cement briquette: 4.68 MPa, 28 days ultimate compression strength improvement values: 7.86 MPa.

Can be proved by above experimental data, be added with after the cement grinding of grinding aid of the present invention, in the time that reality is used, within 3 days, ultimate compression strength can improve 4.68 MPa, and within 28 days, ultimate compression strength can improve 7.86 MPa.There is significant result of use.

Claims (1)

1. a polyethers composite cement grinding aid, is characterized in that:

In every kg water cement grinding aids, polyethers, polyvalent alcohol and Sunmorl N 60S mass ratio are pressed 1:1:0.1 allotment;

In described polyvalent alcohol, by mass percentage, glycerol, ethylene glycol, Diethylene Glycol, Sorbitol Powder, Virahol respectively account for 20%.