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A kind of active excitation type grinding aid for vertical mill grinding slag

A technology of active excitation and grinding aid, applied in the field of admixtures for slag, can solve the problems of different grinding principles, few research and application reports, and increased risks.

Active Publication Date: 2021-05-18
安徽海螺材料科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research and application of grinding aids for ball mill grinding are relatively mature, but the grinding principles of vertical mill and ball mill are different, and there are few related research and application reports.
In addition, the early activity of slag is low, how to fully stimulate the potential activity of slag is also one of the major issues facing the industry at present
[0003] Patent CN109650765A discloses a preparation method of an environment-friendly grinding aid for mineral powder produced by a vertical mill, in which a large amount of sodium hydroxide is used, and a large amount of alkali is brought in. After the mineral powder added with the grinding aid is used, the concrete undergoes alkali-aggregate reaction increased risk of detrimental concrete durability

Method used

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  • A kind of active excitation type grinding aid for vertical mill grinding slag
  • A kind of active excitation type grinding aid for vertical mill grinding slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An active stimulating grinding aid for grinding slag in a vertical mill, which is composed of material A and material B, material A is composed of the following raw materials in parts by weight: 15 parts of polypropylene amine salt, 15 parts of diisopropylethanolamine, 5 parts of triethylene glycol, 10 parts of ethylene glycol butyl ether acetate, and 50 parts of water; material B is composed of the following raw materials in parts by weight: 8 parts of redispersible latex powder, 10 parts of superfine aluminum silicate, and 20 parts of activator parts, 40 parts of limestone powder.

[0024] The polyacrylamine salt is prepared by the following method: methacryloyloxyethyltrimethylammonium chloride and sodium methacrylsulfonate are mixed in a weight ratio of 3:1 and placed in a four-necked flask , add distilled water to dilute to a mass percent concentration of 20%, pass N 2 After 30 minutes, the temperature was raised to 75°C, and the initiator solution was added drop...

Embodiment 2

[0033] An active stimulating grinding aid for grinding slag in a vertical mill, which is composed of material A and material B, material A is composed of the following raw materials in parts by weight: 30 parts of polypropylene amine salt, 10 parts of diisopropylethanolamine, 10 parts of triethylene glycol, 3 parts of ethylene glycol butyl ether acetate, and 75 parts of water; material B consists of the following raw materials in parts by weight: 5 parts of redispersible latex powder, 20 parts of superfine aluminum silicate, and 10 parts of activator parts, 70 parts of limestone powder.

[0034] The polyacrylamine salt is prepared by the following method: methacryloyloxyethyltrimethylammonium chloride and sodium methacrylsulfonate are mixed in a weight ratio of 5:1 and placed in a four-necked flask , add distilled water to dilute to a mass percent concentration of 35%, pass N 2 After 20 minutes, the temperature was raised to 65°C, and the initiator solution was added dropwis...

Embodiment 3

[0043] An active stimulating grinding aid for grinding slag in a vertical mill, which is composed of material A and material B, material A is composed of the following raw materials in parts by weight: 20 parts of polypropylene amine salt, 12 parts of diisopropylethanolamine, 8 parts of triethylene glycol, 7 parts of ethylene glycol butyl ether acetate, and 60 parts of water; material B consists of the following raw materials in parts by weight: 7 parts of redispersible latex powder, 15 parts of superfine aluminum silicate, and 16 parts of activator parts, 55 parts of limestone powder.

[0044] The polyacrylamine salt is prepared by the following method: methacryloxyethyltrimethylammonium chloride and sodium methacrylsulfonate are mixed in a weight ratio of 4:1 and then placed in a four-necked flask , add distilled water to dilute to a mass percent concentration of 25%, pass N 2 After 25 minutes, the temperature was raised to 70°C, and the initiator solution was added dropwi...

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Abstract

The invention discloses an active excitation type grinding aid for vertical grinding of slag, belonging to the technical field of admixtures for slag. The grinding aid of the present invention is composed of material A and material B, wherein, material A is composed of the following raw materials in parts by weight: 15-30 parts of polypropylene-based amine salt, 10-15 parts of diisopropyl ethanolamine, 5 parts of triethylene glycol -10 parts, 3-10 parts of ethylene glycol butyl ether acetate, 50-75 parts of water; material B consists of the following raw materials by weight: 5-8 parts of redispersible latex powder, 10- parts of ultrafine aluminum silicate 20 parts, 10-20 parts of activator, 40-70 parts of limestone powder. The invention adopts multi-component chlorine-free components, and obtains the active excitation type grinding aid for vertical mill grinding slag by optimizing the design combination. The problem of poor effect, while effectively stimulating the activity of mineral powder.

Description

technical field [0001] The invention belongs to the technical field of admixtures for slag, and in particular relates to an active stimulating grinding aid for vertical grinding slag. Background technique [0002] Slag is the main by-product of the iron and steel industry, and has always been the main object of research on the resource utilization of solid waste in cement-based materials. Although the slag has high activity, the potential problem is that the slag is difficult to grind. However, in order to obtain a finer slag, it often needs a longer grinding time, which will inevitably increase energy consumption. The vertical mill grinding slag process is adopted by more and more slag powder production enterprises due to its simple process, high grinding efficiency, small footprint, and low civil construction investment. The research and application of grinding aids for ball mill grinding are relatively mature, but the grinding principles of vertical mill and ball mill ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/26C04B103/52
CPCC04B40/0039C04B2103/52C04B24/2652C04B24/122C04B24/02C04B24/045C04B22/002C04B2103/0057C04B14/041C04B14/28C04B22/148C04B24/04
Inventor 冯恩娟陈烽张辉吕晓秦尤敏李耀王志强
Owner 安徽海螺材料科技股份有限公司
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