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A kind of sulfate-resistant cement and its production method

A technology of sulfate-resistant cement and production method, which is applied in the field of production of building materials, and can solve the problems of poor corrosion resistance of cement, high energy consumption, low energy consumption ecological cement, etc.

Inactive Publication Date: 2019-02-26
江西岩鹰水泥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 2. The raw material of the test is Portland cement with high energy consumption, and the C in the cement clinker 3 S.C 3 A.C 4 High AF, poor corrosion resistance of cement
[0011] 3. At present, there is no low-energy, multi-functional, ecological cement product used in various complex sulfate and strong carbonation environments

Method used

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  • A kind of sulfate-resistant cement and its production method
  • A kind of sulfate-resistant cement and its production method
  • A kind of sulfate-resistant cement and its production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 A sulfate-resistant cement is made of the following raw materials in weight ratio: 32 parts of shell lime powder; 50 parts of calcined ball clay; 18 parts of anhydrite.

[0030] The production method of described sulfate-resistant cement:

[0031] Step 1: Preparation of shell lime powder. Put oyster shells and scallops in a high-temperature furnace to calcinate at 900-940°C, keep warm for 1.5-2.5 hours, cool to room temperature, take them out, and grind them to a fineness of 0.08mm square hole sieve <3%;

[0032] Step 2: Preparation of calcined ball clay. Grind the ball clay to a fineness of 0.08mm square hole sieve < 3%, calcined in a high-temperature furnace at 850-900°C, keep it warm for 1.5-2.5h, cool to room temperature, and take it out;

[0033] Step 3: Preparation of anhydrite powder. Crush and grind the anhydrite to a fineness of 0.08mm square hole sieve <3%;

[0034] Step 4: Mix 32 parts of shell lime powder, 50 parts of calcined ball clay, and 18...

Embodiment 2

[0035] Example 2 A sulphate-resistant cement, made of the following raw materials in weight ratio: 30 parts of shell lime powder; 52 parts of calcined ball clay; 18 parts of anhydrite.

[0036] The production method of the aforementioned sulfate-resistant cement,

[0037] Step 1: Preparation of shell lime powder. Put oyster shells and scallops in a high-temperature furnace to calcinate at 900-940°C, keep warm for 1.5-2.5 hours, cool to room temperature, take them out, and grind them to a fineness of 0.08mm square hole sieve <3%;

[0038] Step 2: Preparation of calcined ball clay. Grind the ball clay to a fineness of 0.08mm square hole sieve < 3%, calcined in a high-temperature furnace at 850-900°C, keep it warm for 1.5-2.5h, cool to room temperature, and take it out;

[0039] Step 3: Preparation of anhydrite powder. Crush and grind the anhydrite to a fineness of 0.08mm square hole sieve <3%;

[0040] Step 4: Mix 30 parts of shell lime powder, 52 parts of calcined ball clay...

Embodiment 3

[0043] Example 3 A sulfate-resistant cement is made of the following raw materials in weight ratio: 30 parts of shell lime powder; 50 parts of calcined ball clay; 20 parts of anhydrite.

[0044] Step 1: Preparation of shell lime powder. Put oyster shells and scallops in a high-temperature furnace to calcinate at 900-940°C, keep warm for 1.5-2.5 hours, cool to room temperature, take them out, and grind them to a fineness of 0.08mm square hole sieve <3%;

[0045] Step 2: Preparation of calcined ball clay. Grind the ball clay to a fineness of 0.08mm square hole sieve < 3%, calcined in a high-temperature furnace at 850-900°C, keep it warm for 1.5-2.5h, cool to room temperature, and take it out;

[0046] Step 3: Preparation of anhydrite powder. Crush and grind the anhydrite to a fineness of 0.08mm square hole sieve <3%;

[0047] Step 4: Mix 30 parts of shell lime powder, 50 parts of calcined ball clay, and 20 parts of anhydrite powder evenly according to the weight ratio to obta...

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Abstract

The invention discloses a preparation method of low energy consumed sulphate resistant cement by utilizing renewable resources of shells, ball clay and anhydrite. The sulphate resistant cement comprises, by mass, 30%-32% of shell lime powder, 50%-52% of calcined ball clay and 18%-20% of the anhydrite. The preparation method comprises the following steps that the shells are calcined and ground to prepare the shell lime powder, the ball clay is ground and calcined to prepare the calcined ball clay, and the anhydrite is crushed and ground to prepare powder. The sulphate resistant cement has the advantages that the renewable resources of the shells, the ball clay and the anhydrite are utilized to produce the sulphate resistant cement, and the sulphate resistant cement is ecotype cement which has the characteristics of waste utilizing, energy saving and multifunction.

Description

technical field [0001] The invention belongs to the new technology of using waste to produce building materials, and in particular relates to a formulation and preparation method of sulfate-resistant cement. Background technique [0002] Sulfate-resistant Portland cement is made of raw material with appropriate ingredients, which is partially melted when fired, and the clinker composed of specific minerals mainly composed of calcium silicate is obtained. Adding an appropriate amount of gypsum and grinding it has a certain resistance to sulfate erosion. Performance hydraulic cementitious material. [0003] Sulfate-resistant Portland cement is produced by combustion flow technology, using natural limestone as raw material, the preparation process is complicated, the clinker calcination temperature is as high as 1450°C, and the grindability is poor. 2 , Large dust emissions. High consumption of resources and energy, uncoordinated with the environment. Ca(OH) in cement stone ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/32C04B7/38
CPCC04B7/32C04B7/38
Inventor 王波
Owner 江西岩鹰水泥有限公司