CN101723614B

CN101723614B - Liquid cement grinding aid

Info

Publication number: CN101723614B
Application number: CN2009103125690A
Authority: CN
Inventors: 顾垚
Original assignee: NANJING SHENHE NEW MATERIALS TECHNOLOGY Co Ltd
Current assignee: Mount Huangshan poly energy saving Technology Co., Ltd.
Priority date: 2009-12-30
Filing date: 2009-12-30
Publication date: 2011-11-30
Anticipated expiration: 2029-12-30
Also published as: CN101723614A

Abstract

The invention relates to a liquid cement grinding aid, which can obviously increase the grinding efficiency of a mill by 10 to 20 percent and properly enhance the early strength of cement and the later strength of the cement, because the doping amount is below 0.06 percent and the main components do not contain triethanolamine. The liquid cement grinding aid comprises the following components in percentage by mass: 10 to 20 percent of beta-aminoethylethanolamine, 5 to 15 percent of sorbierite, 10 to 15 percent of diisopropylaminoethanol, 1 to 5 percent of amino-butanol, 10 to 20 percent of glycerol, 1 to 2 percent of sodium lignin sulfonate, 0 to 10 percent of diglycol, 0 to 8 percent of sodium gluconate and the balance of water. The liquid cement grinding aid can obviously increase the grinding efficiency of the mill by 10 to 20 percent and properly enhance the early strength of the cement and the later strength of the cement; and the liquid cement grinding aid can reduce cement clinker by 4 to 6 percent, increase the doping amount of mixed materials by 4 to 6 percent, and improve the economical and social benefits of cement enterprises under the condition of maintaining the same strength grade of the cement.

Description

A kind of liquid cement grinding additive

Technical field

The present invention relates to a kind of cement and make the cement grinding aid in field, is a kind of liquid cement grinding additive specifically.

Background technology

Both at home and abroad, produce one ton of cement and need 110～120 kg standard coal at present, need the electricity of 110～120 kilowatt-hours, wherein about 40% the energy is the grinding consumption of cement clinker, and the consumption that further improves the mill efficiency minimizing energy is the great task that various countries' Cement industry faces.Using cement grinding aid is to improve mill efficiency to reduce one of effective measure of grinding energy consumption.Particularly, only need to increase a storage tank and a microprocessor pump drive, just can add smoothly, do not need complicated heavy equipment, therefore used widely because the liquid cement grinding additive product is easy to use.The prescription of external existing liquid cement grinding additive mainly is compositions such as alcamines (TEA, TIPA), alcohols (DEG), acetate.Because these products, it is few to have a volume, and liquid meter adds convenient, improves mill grinding efficiency 10～20%, saves the unit time power consumption, improves the flowability of cement powder, helps bulk shipment and storage, so the cement factory use is very general abroad.

The present volume of domestic liquid grinding aid be 2～3/0,000 and volume be many 0.08～0.10%.But along with the increasing of country to the adjustment dynamics of Cement industry structure, nearly from now on 3000 tame medium and small cement production enterprises are integrated or are annexed, and the low-dosage of liquid cement grinding additive will be the trend (volume of external liquid cement grinding additive is substantially below 0.06%) of development.But the main component or the trolamine of the liquid cement grinding additive of at present domestic and international low-dosage, it is more serious that the grinding aid raw material relies on trolamine, moreover fluctuation along with oil price, the price volalility of trolamine is also quite big, have a strong impact on the profit and the living space of grinding aid manufacturing enterprise, so it is urgent all the more to seek the substitute of trolamine.

Summary of the invention

Technical problem to be solved by this invention, be to provide a kind of liquid cement grinding additive, volume is below 0.06%, main ingredient does not contain trolamine, make full use of the super synergistic effect of the amine and the multiple alcohols of little volume, have and improve mill grinding efficiency 10%～20% significantly, suitably improve cement early strength and increase the effect of cement later strength.Under the identical strength of cement grade condition of maintenance, can reduce cement clinker 4%～6%, increase by 4%～6% blended material addition content, be particularly suitable for using, have significant business economic benefit and social benefit in large-scale cement factory (group).

Liquid cement grinding additive of the present invention, it consists of: beta-hydroxyethyl quadrol 10%～20%, sorbyl alcohol 5%～15%, diisopropylaminoethanol 10%～15%, ammonia butanols 1%～5%, glycerol 10%～20%, wooden sodium 1～2%, glycol ether 0～10%, Sunmorl N 60S 0～8%, surplus is a water, and described per-cent is mass percent.

The further prioritization scheme of the present invention is: the mass percent of glycol ether is 5%～10%, and the mass percent of Sunmorl N 60S is 5%～8%.

This liquid cement grinding additive has and improves mill grinding efficiency 10%～20% significantly, suitably improves cement early strength and increase the effect of cement later strength.Under the identical strength of cement grade condition of maintenance, can reduce cement clinker 4%～6%, increase by 4%～6% blended material addition content, thereby improve the economic and social benefit of cement production enterprise.

Embodiment

Below in conjunction with embodiment the present invention is described in further detail.

Embodiment 1: liquid cement grinding additive 1, and each set of dispense is such as descending (mass percent):

Beta-hydroxyethyl quadrol 15%;

Sorbyl alcohol 15%;

Diisopropylaminoethanol 15%;

Ammonia butanols 5%;

Glycerol 10%;

Wood sodium 2%;

Surplus is a water.

Embodiment 2: liquid cement grinding additive 2, and each set of dispense is such as descending (mass percent):

Beta-hydroxyethyl quadrol 20%;

Sorbyl alcohol 10%;

Diisopropylaminoethanol 10%;

Ammonia butanols 1%;

Glycerol 10%;

Wood sodium 1%;

Surplus is a water.

Embodiment 3: liquid cement grinding additive 3, and each set of dispense is such as descending (mass percent):

Beta-hydroxyethyl quadrol 10%;

Sorbyl alcohol 5%;

Diisopropylaminoethanol 15%;

Ammonia butanols 5%;

Glycerol 20%;

Wood sodium 2%;

Surplus is a water.

Embodiment 4: liquid cement grinding additive 4, and each set of dispense is such as descending (mass percent):

Beta-hydroxyethyl quadrol 10%;

Sorbyl alcohol 15%;

Diisopropylaminoethanol 15%;

Ammonia butanols 1%;

Glycerol 15%;

Wood sodium 1%;

Glycol ether 10%;

Sunmorl N 60S 8%;

Surplus is a water.

Embodiment 5: liquid cement grinding additive 5, and substantially the same manner as Example 4, different is in the set of dispense ratio:

Glycol ether 5%;

Sunmorl N 60S 5%.

Embodiment 6: liquid cement grinding additive 6, and substantially the same manner as Example 4, different is in the set of dispense ratio:

Sorbyl alcohol 5%;

Diisopropylaminoethanol 13%;

Glycerol 20%.

This product is the liquid of homogeneous, and product is easy to use, and cement factory only needs a microprocessor pump drive, just can add in the grinding machine smoothly.The composition of this product comprises: beta-hydroxyethyl quadrol, sorbyl alcohol, diisopropylaminoethanol, ammonia butanols, glycerol, wooden sodium, glycol ether, Sunmorl N 60S and water.Wherein beta-hydroxyethyl quadrol, sorbyl alcohol, diisopropylaminoethanol, ammonia butanols play grinding aid and dissemination, and glycol ether plays auxiliary grinding aid and improves cement early strength, and glycerol and Sunmorl N 60S work to increase the cement later strength.Outward appearance is a brown liquid, and pH value (10% concentration) is 8～10, proportion (20 ℃): 1.05～1.19g/cm ³, soltion viscosity (20 ℃) is 30～80cps (centipoise).Be applicable to ordinary Portland cement, pulverized fuel ash cement and composite Portland cement, volume is 0.02%～0.06% of a cement quality.Volume is few, does not change Cement Production technology, and metering is convenient.

Following table is to use the comparison of cement grinding aid front and back cement proportion, operating mode and strength of cement.

Claims

1. a liquid cement grinding additive is characterized in that it consists of

Beta-hydroxyethyl quadrol 10%～20%,

Sorbyl alcohol 5%～15%,

Diisopropylaminoethanol 10%～15%,

Ammonia butanols 1%～5%,

Glycerol 10%～20%,

Wood sodium 1%～2%,

Glycol ether 0～10%,

Sunmorl N 60S 0～8%,

Surplus is a water,

Described per-cent is mass percent.

2. liquid cement grinding additive as claimed in claim 1, the mass percent that it is characterized in that glycol ether is 5%～10%, the mass percent of Sunmorl N 60S is 5%～8%.