Production method of common light calcium carbonate
A light calcium carbonate, production method technology, applied in the direction of calcium carbonate/strontium/barium, chemical instruments and methods, calcium/strontium/barium compounds, etc. Improve the whiteness, the best effect, the effect of improving the whiteness
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Embodiment 1
[0031] A kind of production method of common light calcium carbonate, comprises the steps
[0032] 1) Raw material preparation:
[0033] Limestone: Chemical composition by weight: CaO54%, MgO1.0%, SiO 2 1.5%, Mn≤0.006%, Fe 2 o 3 0.1% and impurity 0.2%; physical property requirements: dense block, no recrystallization, porosity 1%, density: 2.80g / cm3, Mohs hardness 3 and compressive strength 117.6Mpa; limestone entering the kiln is crushed to particle size 150mm; for the ore containing clay or mud balls, it needs to be washed after crushing to remove the soil and impurities;
[0034] Water: suspended matter 20 mg / L, transparency 30 cm, hydrochloric acid insoluble matter (SiO 2 ) 10 mg / L, magnesium oxide (MgO) 100 mg / L, iron oxide (Fe 2 o 3 ) 10 mg / L;
[0035] Coke components and the weight ratio of each component are as follows: fixed carbon 80%, moisture 3%, volatile matter 4.5%, ash 12%, and sulfur 0.5%, particle size 40mm, calorific value 29309KJ / kg;
[0036] 2) Calc...
Embodiment 2
[0048] A kind of production method of common light calcium carbonate, comprises the steps
[0049] 1) Raw material preparation:
[0050] Limestone: Chemical composition by weight: CaO57%, MgO1.5%, SiO 2 1%, Mn0.004%, Fe 2 o 3 0.08% and impurity 0.15%; physical property requirements: dense block, no recrystallization, porosity 0.8%, density: 2.7g / cm3, Mohs hardness 3. and compressive strength 117.6Mpa; the limestone entering the kiln is crushed to particle size 120mm; for the ore containing clay or mud balls, after crushing, it is necessary to wash the ore to remove the soil and impurities;
[0051] Water: suspended matter 20 mg / L, transparency 30 cm, hydrochloric acid insoluble matter (SiO 2 ) 10 mg / L, magnesium oxide (MgO) 100 mg / L, iron oxide (Fe 2 o 3 ) 10 mg / L;
[0052] The fuel is a mixture of anthracite and bituminous coal at a weight ratio of 1:1. The anthracite composition and the weight ratio of each composition are as follows: fixed carbon 75%, moisture 6%, vo...
Embodiment 3
[0065] A kind of production method of common light calcium carbonate, comprises the steps
[0066] 1) Raw material preparation:
[0067] Limestone: Chemical composition by weight: CaO54%, MgO1.0%, SiO 2 1.5%, Mn0.006%, Fe 2 o 3 0.1% and impurities; physical property requirements: dense block, no recrystallization, porosity ≤ 1%, density: 2.65-2.80g / cm3, Mohs hardness 3 and compressive strength 117.6Mpa; limestone entering the kiln is crushed to particle size 80mm; for the ore containing clay or mud balls, it is necessary to wash the ore after crushing to remove the soil and impurities;
[0068] Water: suspended matter 20 mg / L, transparency 30 cm, hydrochloric acid insoluble matter (SiO 2 ) 10 mg / L, magnesium oxide (MgO) 100 mg / L, iron oxide (Fe 2 o 3 ) 10 mg / L;
[0069] Fuel: coke components and the weight ratio of each component are as follows: 80% fixed carbon, 3% water, 4.5% volatile matter, 12% ash, 0.5% sulfur, particle size 40mm, calorific value 29309KJ / kg;
[00...
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