CN105236796A - Limestone-cement liquid grinding aid and preparation method thereof - Google Patents

Abstract

A disclosed limestone-cement liquid grinding aid comprises the following raw materials in percent by mass: 10-15% of polymerized polyol, 10-15% of triisopropanolamine, 10-15% of sodium hexametaphosphate, 5-10% of sodium sulfamate, and the balance water. By using polymerized polyol for replacing triethanolamine with relatively high price, the cement early-stage strength is substantially excited, the grinding efficiency of a grinding machine is improved, and the unit-hour output of the grinding machine is improved. Because of the contained triisopropanolamine, the cement late-stage strength is substantially increased. Sodium hexametaphosphate possesses relatively good dispersing effect, and thus the material grinding easiness is improved. Sodium sulfamate is capable of improving the cement workability and improving cement fluidity.

Description

Wingdale cement liquid grinding aid and preparation method thereof

Technical field

The present invention relates to a kind of Wingdale cement liquid grinding aid and preparation method thereof, belong to grinding aid technical field.

Background technology

China is one of limestone deposit resource-rich country in the world.Except Shanghai, Hong Kong, Macao, in each province, all there is distribution in municipality directly under the Central Government, autonomous region.According to former State Bureau of Building Materials Industry's geology center statistics, national limestone distribution area reaches 43.8 ten thousand Km ²(not comprising Tibet and Taiwan), account for 1/20 of area, wherein can account for 1/4 ~ 1/3 of total resources for the limestone resources amount of making cement raw material.In order to meet environment protection, the eubiosis, prevent erosion, the needs of the aspects such as scenery travelling, constantly improving and implementing particularly along with China's town development planning, also will be able to reduce for the produced quantity of cement limestone.The whole nation has found cement limestone ore deposit point seven, 8,000 place, wherein existing proven reserve has 1286 places, wherein large ore deposit 257 place, medium-sized 481 places, small-sized 486 places (ore reserves be greater than 8,000 ten thousand tons for large-scale, 4000 ~ 8,000 ten thousand tons for medium-sized, be less than 4,000 ten thousand tons for small-sized), possess ore reserves 54,200,000,000 tons altogether, wherein limestone reserves 50,400,000,000 tons, account for 93%; Marble reserves 3,800,000,000 tons, account for 7%.

General Wingdale all can reach the requirement of cement raw material after fragmentation, grinding.Along with the quickening of opening, the development of the national economy, rapidly, " 12 " period, along with Economic Development Mode is accelerated to change, domestic market will progressively transfer mild growth to by growing at top speed to cement demand, and speedup obviously eases up in Cement industry development.Cement-based material and goods development are accelerated.Prediction cement increases by 3% ~ 4% every year, and domestic cement demand about 2,200,000,000 ~ 2,300,000,000 tons in 2015, therefore Cement industry will increase to Wingdale demand.

Summary of the invention

Object: for solving the deficiencies in the prior art, solve common liq grinding aid low for cement mill unit-hour output in Wingdale cement production process, strength of cement is low, the problem that cement setting time is longer, the invention provides a kind of Wingdale cement liquid grinding aid and preparation method thereof.

Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:

A kind of Wingdale cement liquid grinding aid, its raw material consists of: polymerized polyalcohol 10-15%, tri-isopropanolamine 10-15%, Sodium hexametaphosphate 99 10-15%, thionamic acid sodium 5-10%, and surplus is water, total amount 100%; Described per-cent is mass percent.

Present invention also offers the preparation method of above-mentioned Wingdale cement liquid grinding aid, the steps include:

1) inject enough water according to formula rate at reactor, be heated to 45-55 DEG C and constant temperature, add Sodium hexametaphosphate 99 and stir 20-40min, then add thionamic acid sodium stirring 20-40min;

2) be then cooled to room temperature, add polymerized polyalcohol and tri-isopropanolamine stirs;

3) again after 150 order stainless steel sift impurity screenings, Wingdale cement liquid grinding aid is obtained.

Beneficial effect: in Wingdale cement liquid grinding aid provided by the invention, uses polymerized polyalcohol, the trolamine that fictitious hosts is higher, can remarkable excited cement early strength, improves mill grinding efficiency, raising mill hourly output; The tri-isopropanolamine contained, can significantly increase cement later strength; Sodium hexametaphosphate 99 has good dissemination, improves the grindability of material; Thionamic acid sodium can improve cement workability, improves cement fluidity.Adopt pointed formula rate, optimize the composition of traditional grinding aid, mutually act synergistically between each component; Can significantly increase high moisture material mobility, improve mill grinding efficiency, improve mill hourly output.

Embodiment

Below in conjunction with example, the present invention is illustrated:

Embodiment 1: a kind of Wingdale cement liquid grinding aid, composed as follows:

Polymerized polyalcohol 12%,

Tri-isopropanolamine 12%,

Sodium hexametaphosphate 99 12%,

Thionamic acid sodium 8%,

Surplus is water, and total amount is 100%.

The preparation method of Wingdale cement liquid grinding aid, step is: inject enough water according to formula rate at reactor, be heated to 50 DEG C and constant temperature, add Sodium hexametaphosphate 99 and stir 30min, add thionamic acid sodium again and stir 30min, be cooled to room temperature, add polymerized polyalcohol and tri-isopropanolamine stirring 20min, again after 150 order stainless steel sift impurity screenings, obtain product 1.

Embodiment 2 to embodiment 5:

By the method repeating EXPERIMENTAL EXAMPLE 1 with each component concentration of specifying in following table 1, obtain Wingdale cement liquid grinding aid product 2 to the product 5 of different components content respectively:

Table 1

Component (%)	Embodiment 1	Embodiment 2	Embodiment 3	Embodiment 4	Embodiment 5
						Polymerized polyalcohol	12	15	12	12	10
Tri-isopropanolamine	12	10	13	14	15
						Sodium hexametaphosphate 99	12	15	12	10	10
Thionamic acid sodium	8	10	5	8	7
						Obtain	Product 1	Product 2	Product 3	Product 4	Product 5

By Wingdale cement liquid grinding aid product obtained in embodiment 1 to embodiment 5, be 0.03% of cement quality at addition content, carry out the contrast experiment and the blank assay that add Wingdale cement liquid grinding aid and common grinding aid, experimental result is as shown in table 2:

Table 2

Can find out, the Wingdale cement liquid grinding aid that the invention provides and prepare, compared with common grinding aid, have the following advantages: 1) unit-hour output increases: under same proportioning, this Wingdale of admixture cement liquid grinding aid unit-hour output increases 22%-25%; 2) intensity: in same proportioning, with under slump condition, this Wingdale of admixture cement liquid grinding aid, 3 days intensity can be made to improve 15-18%, and within 28 days, strength of cement improves more than 15-20%.

Below disclose the present invention with preferred embodiment, so it is not intended to limiting the invention, and all employings are equal to replacement or the technical scheme that obtains of equivalent transformation mode, all drop within protection scope of the present invention.

Claims (2)

1. a Wingdale cement liquid grinding aid, its raw material consists of: polymerized polyalcohol 10-15%, tri-isopropanolamine 10-15%, Sodium hexametaphosphate 99 10-15%, thionamic acid sodium 5-10%, and surplus is water, total amount 100%; Described per-cent is mass percent.

2. the preparation method of Wingdale cement liquid grinding aid according to claim 1, the steps include:

1) inject enough water according to formula rate at reactor, be heated to 45-55 DEG C and constant temperature, add Sodium hexametaphosphate 99 and stir 20-40min, then add thionamic acid sodium stirring 20-40min;

2) be then cooled to room temperature, add polymerized polyalcohol and tri-isopropanolamine stirs;

3) again after 150 order stainless steel sift impurity screenings, Wingdale cement liquid grinding aid is obtained.