A kind of production technology of heavy calcium carbonate
A heavy calcium carbonate, production process technology, applied in the direction of calcium carbonate/strontium/barium, etc., can solve the problems of yellowish color of heavy calcium carbonate finished products, large waste of modifiers, low whiteness, etc., to achieve low cost, The effect of convenient preparation and simple process operation
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Embodiment 1
[0020] Embodiment 1: a kind of production technology of heavy calcium carbonate, it comprises the following steps:
[0021] S1. Crushing: choose natural marble as raw material, send it to jaw crusher for crushing, crush the raw material to particle size ≤ 4mm, and then use sand making machine and linear vibrating screen to make marble powder below 40 mesh, and set aside;
[0022] S2. Soak slurry: Add water and dispersant to the crushed marble powder, soak the slurry at 20°C for 25 minutes, then add advanced mixed stearic acid surface treatment agent, mix evenly and soak for 30 minutes to obtain slurry; the marble The weight ratio of powder, water and dispersant is 100:300:1; The molecular formula of described advanced mixed stearic acid is: R-O-(CH 2 CH 2 O) n -H, in the formula, R is a dodecyl group, and n is an integer in 3. The weight ratio of the marble powder and the advanced mixed stearic acid is 43:1;
[0023] S3. Wet grinding: input the slurry into a grinder for wet...
Embodiment 2
[0026] Embodiment 2: a kind of production technology of heavy calcium carbonate, it comprises the following steps:
[0027] S1. Crushing: choose natural marble as raw material, send it to jaw crusher for crushing, crush the raw material to particle size ≤ 4mm, and then use sand making machine and linear vibrating screen to make marble powder below 40 mesh, and set aside;
[0028] S2. Soak slurry: add water and dispersant to the crushed marble powder, soak the slurry at 45°C for 40 minutes, then add advanced mixed stearic acid surface treatment agent, mix well and soak for 60 minutes to obtain slurry; the marble The weight ratio of powder, water and dispersant is 100: 400: 1.5; The molecular formula of described senior mixed stearic acid is: R-O-(CH 2 CH 2 O) n -H, in the formula, R is a dodecyl group, and n is an integer in 16. The weight ratio of the marble powder and the advanced mixed stearic acid is 58:1;
[0029] S3. Wet grinding: input the slurry into a grinder for we...
Embodiment 3
[0032] Embodiment 3: a kind of production technology of heavy calcium carbonate, it comprises the following steps:
[0033] S1. Crushing: choose natural marble as raw material, send it to jaw crusher for crushing, crush the raw material to particle size ≤ 4mm, and then use sand making machine and linear vibrating screen to make marble powder below 40 mesh, and set aside;
[0034] S2. Soak slurry: Add water and dispersant to the crushed marble powder, soak the slurry for 30 minutes at 32°C, then add advanced mixed stearic acid surface treatment agent, mix evenly and soak for 42 minutes to obtain slurry; the marble The weight ratio of powder, water and dispersant is 100:320:1.2; The molecular formula of described advanced mixed stearic acid is: R-O-(CH 2 CH 2 O) n -H, in the formula, R is a dodecyl group, and n is an integer in 5. The weight ratio of the marble powder and the advanced mixed stearic acid is 48:1;
[0035] S3. Wet grinding: input the slurry into a grinding mach...
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