Calcined talc with low iron and high whiteness and preparation method thereof
A technology of calcined talc and high whiteness, applied in chemical instruments and methods, inorganic chemistry, silicon compounds, etc., can solve problems such as complicated process and increased production cost, and achieve the effect of improving utilization rate and reducing production cost
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Embodiment 1
[0037] S11. First, use 600*900 jaw crusher to crush 50 parts of talc slag to 150mm small particles, and use electromagnetic iron remover to remove iron, and the small particles are further crushed to 30mm by 250*1000 fine jaw crusher. There is a drum iron remover with high field strength at the front end, and finally, a 600*800 counter-roller crusher is used to crush to 5mm to obtain talc wool;
[0038] S12, the talc rough surface obtained above is mixed with 40 parts of quartz sand and 10 parts of magnesite tailings, wherein the SiO in the talc slag is 2 The mass fraction of MgO is 15%, the mass fraction of MgO is 43%, Fe 2 O 3 The mass fraction of 0.4%; SiO in quartz sand 2 The mass fraction of MgO is 99%, the mass fraction of MgO is 0.2%, Fe 2 O 3 The mass fraction of 0.1%; SiO in magnesite tailings 2 The mass fraction of MgO is 15%, the mass fraction of MgO is 35%, Fe 2 O 3 The mass fraction is 0.3%; after mixing the above raw materials, add 2‰ of sodium carbonate a...
Embodiment 2
[0041] S21. First, use 600*900 jaw crusher to crush 40 parts of talc slag to 200mm small particles, and use electromagnetic iron remover to remove iron. The small particles are further crushed to 20mm by 250*1000 fine jaw crusher. There is a drum iron remover with high field strength at the front end, and finally, a 600*800 counter-roller crusher is used to crush to 4mm to obtain talc wool;
[0042] S22, the talc rough surface obtained above is mixed with 45 parts of quartz sand and 15 parts of magnesite tailings, wherein the SiO in the talc slag is 2 The mass fraction of MgO is 12%, the mass fraction of MgO is 45%, Fe 2 O 3 The mass fraction of 0.4%; SiO in quartz sand 2 The mass fraction of MgO is 97%, the mass fraction of MgO is 0.3%, Fe 2 O 3 The mass fraction of 0.2%; SiO in magnesite tailings 2 The mass fraction of MgO is 10%, the mass fraction of MgO is 40%, Fe 2 O 3 1.25‰ of sodium carbonate and 1.25‰ of barium sulfate were added after mixing the above-mentioned...
Embodiment 3
[0045] S31. First, use 600*900 jaw crusher to crush 60 parts of talc slag to 200mm small particles, and use electromagnetic iron remover to remove iron, and the small particles are further crushed to 30mm by 250*1000 fine jaw crusher. There is a drum iron remover with high field strength at the front end, and finally, a 600*800 counter-roller crusher is used to crush to 5mm to obtain talc wool;
[0046] S32, mix the talc rough surface obtained above with 40 parts of quartz sand, wherein, the SiO in the talc slag is 2 The mass fraction of MgO is 20%, the mass fraction of MgO is 40%, Fe 2 O 3 The mass fraction of 0.4%; SiO in quartz sand 2 The mass fraction of MgO is 98%, and the mass fraction of MgO is 2%; after mixing the above raw materials, add 1.5‰ of sodium carbonate and 1‰ of barium sulfate, and place the resulting mixture in a ball mill, add demineralized water and grind to 325 mesh, pass through After removing impurities, the vertical ring slurry iron remover with hi...
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