Method for preparing high-ferric Alite-calcium barium sulphoaluminate cement by using red mud and barium mud

A technology of barium calcium sulfoaluminate and cement, which is applied in the direction of cement production, etc. It can solve the problems of reducing the content of tricalcium silicate, reducing costs, and high energy consumption, and achieves the effects of low firing temperature, cost reduction, and energy saving

A technology of barium calcium sulfoaluminate and cement, which is applied in the direction of cement production, etc. It can solve the problems of reducing the content of tricalcium silicate, reducing costs, and high energy consumption, and achieves the effects of low firing temperature, cost reduction, and energy saving

CN104496231AActive Publication Date: 2015-04-08GUILIN UNIVERSITY OF TECHNOLOGY
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  • Method for preparing high-ferric Alite-calcium barium sulphoaluminate cement by using red mud and barium mud
  • Method for preparing high-ferric Alite-calcium barium sulphoaluminate cement by using red mud and barium mud
  • Method for preparing high-ferric Alite-calcium barium sulphoaluminate cement by using red mud and barium mud

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) The weight percentage of the mineral phase composition of the design cement clinker is: C 3.75 B 0.25 A 3 6%, C 2 S: 19%, C 3 S 42%, C 4 AF 25% and C 3 A 8%.

[0025] (2) Using the mathematical calculation software mathematica5.0 that comes with Excel, the weight percentage of raw materials is calculated as follows: clay 15.66%, red mud 12.53%, limestone 66.15%, gypsum 3.6%, barium mud 0.33%, bauxite 1.15% and fluorite 0.58%.

[0026] (3) Crumble and homogenize the raw materials calculated in step (2), and dry them separately until the moisture content is less than 1%; the ball mill grinds through a 200-mesh sieve and the residue is less than 5%, so that the ingredients are uniform, and the powder is ground until raw until the ingredients are mixed.

[0027] (4) Make the raw material mixed in step (3) into a round cake-shaped sample with a radius of 5 cm and a thickness of 2 cm. The calcination temperature is 1300 Sintering under the lower conditions for ...

Embodiment 2

[0031] (1) The weight percentage of the mineral phase composition of the design cement clinker is: C 3.75 B 0.25 A 3 6%, C 2 S: 19%, C 3 S 37%, C 4 AF 30% and C 3 A 8%.

[0032] (2) Using the mathematical calculation software mathematica5.0 that comes with Excel, the weight percentage of raw materials is calculated as follows: clay 13.79%, red mud 16.4%, limestone 63.86%, gypsum 3.57%, barium mud 0.33%, bauxite 1.47% and fluorite 0.58%.

[0033] (3) Crumble and homogenize the raw materials calculated in step (2), and dry them separately until the moisture content is less than 1%; the ball mill grinds through a 200-mesh sieve and the residue is less than 5%, so that the ingredients are uniform, and the powder is ground until raw until the ingredients are mixed.

[0034] (4) Make the raw material mixed in step (3) into a round cake-shaped sample with a radius of 5 cm and a thickness of 2 cm. The calcination temperature is 1290 Sintering under the same conditions for...

Embodiment 3

[0038] (1) The weight percentage of the mineral phase composition of the design cement clinker is: C 3.75 B 0.25 A 3 6%, C 2 S: 19%, C 3 S 32%, C 4 AF 35% and C 3 A 8%.

[0039] (2) Using the mathematical calculation software mathematica5.0 that comes with Excel, the weight percentage of raw materials is calculated as follows: clay 11.95%, red mud 20.34%, limestone 61.64%, gypsum 3.55%, barium mud 0.33%, bauxite 1.8% and fluorite 0.39%.

[0040] (3) Crumble and homogenize the raw materials calculated in step (2), and dry them separately until the moisture content is less than 1%; the ball mill grinds through a 200-mesh sieve and the residue is less than 5%, so that the ingredients are uniform, and the powder is ground until raw until the ingredients are mixed.

[0041] (4) Make the raw material mixed in step (3) into a round cake-shaped sample with a radius of 5 cm and a thickness of 2 cm. The calcination temperature is 1290 Sintering under the same conditions for...

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Abstract

The invention discloses a method for preparing high-ferric Alite-calcium barium sulphoaluminate cement by using red mud and barium mud. The mineral phases are as follows in percentage by weight: 5-8% of C(4-x)BxA3S, 15-19% of C2S, 30-45% of C3S, 25-45% of C4AF and 4-8% of C3A; the raw materials are as follows in percentage by weight: 10-20% of clay, 8-30% of red mud, 55-65% of limestones, 3-5% of gypsum, 0.3-0.5% of barium mud, 0-2% of bauxite and 0.4-1% of fluorite. The method comprises the following steps: crushing and homogenizing the raw materials and drying and polishing; preparing a round cake-shaped test sample which is 5cm in radius and 2cm in thickness, and calcining and cooling; and (6) crushing, and doping 8-12% of gypsum or dihydrate gypsum based on the total mass of the material, wherein the grinding fineness is 350m<2> / kg-450m<2> / kg or residue on sieve is 5% by a 200mesh sieve. The high-ferric Alite-calcium barium sulphoaluminate cement disclosed by the invention has the characteristics of low sintering temperature and small volume shrinkage, low cost and durability and the like as high-ferric or high-ferric aluminum industrial wastes and barium-containing industrial waste residues are used as raw materials.

Description

technical field [0001] The invention belongs to the technical field of cement preparation, in particular to the preparation of barium calcium sulfoaluminate mineral (CBA) by using red mud and barium mud as raw materials. ), Alite (C 3 S) and tetracalcium aluminoferrite (C 4 AF) Mineral-composite high-iron Alite-barium calcium sulfoaluminate cement. Background technique [0002] The degree of social development is increasing day by day, and the requirements for my country's infrastructure construction and engineering quality are constantly improving. The disadvantages and shortcomings of traditional Portland cement are becoming more and more obvious, mainly reflected in the consumption of a large amount of high-quality limestone resources, high firing temperature, and coal resources. The loss is huge, bringing the greenhouse gas CO 2 and harmful gas SO x , NO x Emissions increased sharply, which aggravated the environmental load, and the design content of tricalcium sili...

Claims

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Application Information

Patent Timeline
08 Apr 2015
Publication
CN104496231A
IPC
C04B7/32; C04B7/14
CPC
Y02P40/10
Inventors
赵艳荣; 陈平