Method for producing dry-mixed masonry motar using semidry desulfurized gypsum and blast-furnace slag
A technology for semi-dry desulfurization and blast furnace slag, applied in chemical instruments and methods, mixing operation control, mixing operation control devices, etc., can solve the problems of high cost, difficult comprehensive utilization, and complex composition of semi-dry desulfurization gypsum, etc. To achieve the effect of low production cost
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Embodiment 1
[0018] (1) First dry the blast furnace slag, the water content of the dried blast furnace slag is 0.8%, and grind the dried blast furnace slag to a specific surface area of 490m 2 / kg.
[0019] (2) The semi-dry desulfurization gypsum is tested for water content, and the content of absorbed water is 0.9%.
[0020] (3) Classify the river sand, and the classified river sand complies with the regulations on medium sand in GB / T1468-2001. The graded river sand is dried, and the moisture content of the dried river sand is 0.4%.
[0021] (4) Mix 20% of the above-mentioned pulverized blast furnace slag powder, 20% of semi-dry desulfurization gypsum, and 60% of river sand in a mixer by weight percentage and then sell them as finished products after being packaged.
[0022] The dry-mixed mortar prepared according to the above steps has the performance indicators shown in Table 1, wherein the water retention test method is carried out according to the provisions of DBJ / T01-73-2003, an...
Embodiment 2
[0026](1) First dry the blast furnace slag, the water content of the dried blast furnace slag is 1.0%, and grind the dried blast furnace slag to a specific surface area of 430m 2 / kg.
[0027] (2) The moisture content of the semi-dry desulfurized gypsum was detected, and the content of absorbed water was 3.9%. The semi-dry desulfurized gypsum was dried, and the semi-dry desulfurized gypsum rate after drying was 1.0%.
[0028] (3) The mountain sand is classified, and the classified mountain sand complies with the regulations on medium sand in GB / T1468-2001. The graded mountain sand is dried, and the moisture content of the dried mountain sand is 0.3%.
[0029] (4) Mix 20% of the above-mentioned pulverized blast furnace slag powder, 15% of semi-dry desulfurization gypsum, and 65% of mountain sand in a mixer by weight percentage, and then they can be sold as finished products after being packaged.
[0030] The dry-mixed mortar prepared according to the above steps has the per...
Embodiment 3
[0034] (1) First dry the blast furnace slag, the water content of the dried blast furnace slag is 0.7%, and grind the dried blast furnace slag to a specific surface area of 510m 2 / kg.
[0035] (2) The moisture content of the semi-dry desulfurization gypsum was detected, and the content of the absorbed water was 2.8%. The semi-dry desulfurization gypsum was dried, and the semi-dry desulfurization gypsum rate after drying was 0.8%.
[0036] (3) Classify the tailings sand, and the classified tailings sand meets the regulations on fine sand in GB / T1468-2001. The graded tailings sand is dried, and the moisture content of the dried tailings sand is 0.4%.
[0037] (4) Mix 15% of the above-mentioned pulverized blast furnace slag, 15% of semi-dry desulfurization gypsum, and 70% of tailings sand in a mixer and package them as finished products by weight percentage.
[0038] The dry-mixed mortar prepared according to the above steps has the performance indicators shown in Table 3, w...
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