CN101892031B

CN101892031B - Powder grinding addictive for coal-series hard kaoline

Info

Publication number: CN101892031B
Application number: CN2010102059228A
Authority: CN
Inventors: 赵淼
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-10
Filing date: 2010-06-10
Publication date: 2013-12-11
Anticipated expiration: 2030-06-10
Also published as: CN101892031A

Abstract

The invention discloses powder grinding addictive for coal-series hard kaoline. The main preparation process comprises the following steps of: adding various components including less than or equal to 1 percent of coal refuse (Fe2O3+TiO2), more than or equal to 2.5 of sodium water glass modulus, sodium hexametaphosphate, polyvinylalcohol, tributyl phosphate and gylcol ester into a ball grinder in turn according to the proportion, mixing, grinding, discharging and packaging. A non-metal grinding body must be adopted in the ball grinder. By using the powder grinding addictive, the powder grinding addictive enables the power consumption of a dry fine powder grinding work section of the coal-series hard kaoline to reduce by 6.5 to 8 percent and has the advantages of simple production, convenient use and low cost.

Description

A kind of grinding aid of the powdery for coal-measure hard kaolin

Technical field

The present invention relates to a kind of grinding aid of the powdery for coal-measure hard kaolin, refer in particular in coal-measure hard kaolin " dry wet method in conjunction with " production technique, a kind of powdery grinding aid that is exclusively used in dry regrind mill workshop section.

Background technology

In current domestic coal-measure hard kaolin production process, the technological process of production of most employing the " dry wet method in conjunction with ", dry regrind mill workshop section is one of them important unit production process; In total power consumption of coal-measure hard kaolin production process, the current consumption of dry regrind mill workshop section accounts for 35%～48% of total power consumption, and the approach that reduces energy consumption has two, and the one, improve the performance of grinding machine; The 2nd, improve mill efficiency by adding grinding aid, in both, current developing direction is the advanced grinding aids efficiently of research and development.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of powdery grinding aid for the dry regrind mill of coal-measure hard kaolin workshop section, and this powdery grinding aid is by coal gangue (Fe ₂o ₃+ TiO ₂)≤1%, sodium silicate modulus>=2.5, Sodium hexametaphosphate 99, polyvinyl alcohol, tributyl phosphate, glycol ester is compound formulated, and addition during use is grinding material 0.1%～0.5%.

The technical problem to be solved in the present invention is realized by following scheme: a kind of powdery grinding aid for the dry regrind mill of coal-measure hard kaolin workshop section is characterized in that: the each component that forms the powdery grinding aid is by weight percentage: coal gangue (Fe ₂o ₃+ TiO ₂)≤1%75%～85%, sodium silicate modulus>=2.55%～10%, Sodium hexametaphosphate 99 2%～5%, polyvinyl alcohol 2%～3%, tributyl phosphate 2%～4%, glycol ester 1%～3%.Preparation process is as follows: quantitatively take in proportion each component, add in ball mill and grind 1～3 hour, the grinding element in ball mill must adopt non-metallic material, and the evenly rear discharging packing of ground and mixed is the powdery grinding aid for coal-measure hard kaolin.

Advantage of the present invention is: the use of powdery grinding aid makes the power consumption of the dry regrind mill of coal-measure hard kaolin workshop section reduce by 6.5%～8%; The powdery grinding aid also has simple, easy to use, the lower-cost advantage of production.

The accompanying drawing explanation

Figure is powdery grinding aid technological process of production schematic diagram

Embodiment

Embodiment 1: the preparation 100kg coal-measure hard kaolin powdery grinding aid of take is example, coal gangue (Fe ₂o ₃+ TiO ₂)≤1%85kg, sodium silicate modulus>=2.56kg, Sodium hexametaphosphate 99 3kg, polyvinyl alcohol 2kg, tributyl phosphate 3kg, glycol ester 1kg, add successively in ball mill and grind after 1 hour, the discharging packing; Grinding element in ball mill must adopt non-metallic material.

Embodiment 2: the preparation 100kg coal-measure hard kaolin powdery grinding aid of take is example, coal gangue (Fe ₂o ₃+ TiO ₂)≤1%75kg, sodium silicate modulus>=2.510kg, Sodium hexametaphosphate 99 5kg, polyvinyl alcohol 3kg, tributyl phosphate 4kg, glycol ester 3kg, add successively in ball mill and grind after 2 hours, the discharging packing; Grinding element in ball mill must adopt non-metallic material.

Embodiment 3: the preparation 100kg coal-measure hard kaolin powdery grinding aid of take is example, coal gangue (Fe ₂o ₃+ TiO ₂)≤1%81kg, sodium silicate modulus>=2.58kg, Sodium hexametaphosphate 99 4kg, polyvinyl alcohol 3kg, tributyl phosphate 2kg, glycol ester 2kg, add successively in ball mill and grind after 3 hours, the discharging packing; Grinding element in ball mill must adopt non-metallic material.

Claims

1. the grinding aid of the powdery for coal-measure hard kaolin is characterized in that: the various components of powdery grinding aid are by weight percentage, coal gangue (Fe ₂o ₃+ TiO ₂)≤1%75%～85%, sodium silicate modulus>=2.55%～10%, Sodium hexametaphosphate 99 2%～5%, polyvinyl alcohol 2%～3%, tributyl phosphate 2%～4%, glycol ester 1%～3%, above each component adds the interior ground and mixed of ball mill 1～3 hour in proportion successively, and the discharging packing is the powdery grinding aid; Must adopt the non-metal grinding body in ball mill.