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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[0030] Example 1
[0031] A production method of ordinary light calcium carbonate, including the following steps
[0032] 1) Raw material preparation:
[0033] Limestone: chemical composition required by weight: CaO54%, MgO1.0%, SiO 2 1.5%, Mn≤0.006%, Fe 2 O 3 0.1% and impurity 0.2%; physical properties requirements: compact block, no recrystallization, porosity 1%, density: 2.80g / cm3, Mohs hardness of 3 and compressive strength of 117.6Mpa; limestone entering the kiln is broken to the size 150mm; For ore containing clay or mud, washing must be carried out after crushing to remove soil and impurities;
[0034] Water: Suspended matter 20mg / L, transparency 30cm, 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] The coke components and their weight ratios are as follows: fixed carbon 80%, moisture 3%, volatile content 4.5%, ash 12%, and sulfur 0.5%, particle size 40mm, calorific value 29309KJ / kg;
[0036] 2) Calcin...
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[0047] Example 2
[0048] A production method of ordinary light calcium carbonate, including the following steps
[0049] 1) Raw material preparation:
[0050] Limestone: chemical composition required by weight: CaO57%, MgO1.5%, SiO 2 1%, Mn0.004%, Fe 2 O 3 0.08% and impurity 0.15%; physical property requirements: compact block, non-recrystallized, porosity 0.8%, density: 2.7g / cm3, Mohs hardness 3. and compressive strength 117.6Mpa; the limestone entering the kiln is broken to particle size 120mm; For ore containing clay or mud, washing must be carried out after crushing to remove soil and impurities;
[0051] Water: Suspended matter 20mg / L, transparency 30cm, 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 1:1 mixture of anthracite and bituminous coal by weight. The components of anthracite and the weight ratio of each component are as follows: fixed carbon 75%, moisture 6%, volatile content 10...
Example Embodiment
[0064] Example 3
[0065] A production method of ordinary light calcium carbonate, including the following steps
[0066] 1) Raw material preparation:
[0067] Limestone: chemical composition required by weight: CaO54%, MgO1.0%, SiO 2 1.5%, Mn0.006%, Fe 2 O 3 0.1% and impurities; physical property requirements: compact block, no recrystallization, porosity ≤1%, density: 2.65~2.80g / cm3, Mohs hardness 3 and compressive strength 117.6Mpa; the limestone entering the kiln is crushed to particle size 80mm; For ore containing clay or mud, washing must be carried out after crushing to remove soil and impurities;
[0068] Water: Suspended matter 20mg / L, transparency 30cm, 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: fixed carbon 80%, moisture 3%, volatile content 4.5%, ash content 12%, sulfur content 0.5%, particle size 40mm, calorific val...
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