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Calcium carbonate
(conversional)
Calcium
carbonate (technological chalk)
Strontium carbonate
Calcium carbonate (conversional) (synthetic chalk, lime carbonate)
Technical specifications (TU) 113-08-667-98
CaCO3
Use:
Calcium carbonate (conversional) – by-product of NPK production – is
used:
- in agriculture as material for liming of hyper-acidic soils;
- in construction and industry as construction material; as raw material for
lime, lime cements and glass production; as an additive for paints, fillings
and other finishing materials, rubber blends, paper, plastics, linoleum,
sculpture works and for other purposes.
Characteristics:
Non-flammable and non-explosive product. Class of hazard with regard to
impact on human body – 4.
Calcium carbonate is shipped in bulk by rail and by road in accordance with
the rules for the corresponding kind of transport
Guaranteed shelf life:
6 months.
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Quality chatacteristocs
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grade B
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First class
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Second class
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1. Appearance
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Microcrystallic free-running white product
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2. Total content of calcium and magnesium carbonates, in calcium
carbonate equivalent, %, min
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90
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85
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3. Water content, %, max
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1,5
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2,0
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4. Total strontium content, in strontium equivalent, %, max
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1,2
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1,2
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5. Sieve residual content 1 mm , %, max
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6
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6
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6. Content of toxic elements mixtures incl. cadmium, arsenic,
hydrargyrum, and plumbum, %
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The product is to meet the TU requirements
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Calcium carbonate (technological
chalk)
Technical specification (TU) 95-2317-91
CaCO3
Usage:
There are 2 types of calcium carbonate (technological chalk) – “K”
type and “C” type.
K type product is used in paint and varnish industry for production of
paints and finishing materials
C type product is used in glass industry for glass production.
Characteristics:
Non-flammable and non-explosive product, in pure form it is non-toxic, but
calcium phosphates and fluorides and strontium carbonates that the calcium
carbonate contains as mixtures increase its toxicity.
Package:
The product is packed in PE bags, five-layer bitumen-impregnated or
laminated as well as FIBCs.
Transportation:
The product is shipped by rail and by road in accordance with the shipping
rules for the corresponding kind of transport.
Guaranteed shelf life:
6 months.
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Quality characteristics
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К type
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С type
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1. Whiteness, %, min
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90
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no standard
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2. Calcium carbonate content, %, min
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90
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90
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3. Water content, %, max
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1
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1
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4. Content of agents soluble in water, %, max
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1
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1,5
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5. Sand content, %, max
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0,5
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0,5
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6. Particles retained on sieve with mesh No. 016, %, max
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0,5
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0,5
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7. Content of ammonium nitrate in water extract, %, max
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no standard
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0,2
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Information: calcium carbonate contains mixtures of calcium
fluoride (up to 1% of weight), calcium phosphate ( up to 2 % of weight), and
strontium carbonate (up to 1,5% of weight).
Strontium carbonate
Technical specification (TU) 95-2326-91
SrCO3
Usage:
The product is used in electronic and metallurgic industry, construction and
other branches of industry:
- in production of color TV picture tubes, where the chemical absorbs X-rays
created by the electrons that hit the screen (retardation radiation);
- during production of ferrostrontium powders, which are used for production
of magnetic ceramic ferrites (constant magnets);
- in zinc electro winning technologies: strontium carbonate is added to
electrolyte in form of suspension that allows to produce zinc without lead
mixtures
- in ceramic and glass industry in production of fire-resistant ceramics and
glazes replacing zinc, magnesium, calcium, lead, it is also
possible to to use strontium carbonate for crystal glass production
- in pyrotechnics;
- in processes of the following strontium compounds production:
- Strontium chromate – anticorrosion coloring agent in paints for aluminum
alloys (in aviation and shipbuilding);
- Strontium chloride;
- Metallic strontium used in metallurgy to improve cast iron and steel
quality as well as to modify Al and Si alloys in welding
electrodes;
- Strontium hydroxide for production of strontium and lithium-strontium
soaps, which are the basis for grease lubricants;
- Strontium phosphate – component of luminiscent materials;
- Strontium oxide;
- Strontium perchlorate;
- Strontium fluoride.
Strontium carbonate is produced by nitric-acid apatite decomposition method
without use of sulphur and chlorine containing reagents
Depending on the major element there fractional makeup there are 3 kinds of
strontium carbonate: Ag, Ap, Bg, Bp, Cg, Cp (“p” and “g” stand for powder and
granules correspondingly)
Characteristics:
Solid friable material of white or light-gray color. Non-flammable and
non-explosive product.
Package:
The product is packed in FIBCs.
Transportation:
The product is shipped by rail and by road in accordance with the shipping
rules for the corresponding kind of transport.
Guaranteed shelf life:
not limited.
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Quality characteristics
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Аг
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Ап
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Вг
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Вп
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Сг
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Сп
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1. Strontium carbonate content, %
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min 97,0
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min 97,0
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94-96
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94-96
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min 95
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min 95
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2. Calcium carbonate content, %
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0,3-1,0
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0,3-1,0
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0,3-1,5
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0,3-1,5
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0,3-1,5
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0,3-1,5
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3. Barium carbonate content, %, max
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1,2
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1,2
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4
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4
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1,5
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1,5
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4. Potassium content, in Na2CO3 equivalent,
%, max
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1,0
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1,0
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1,0
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1,0
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1,0
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1,0
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5. Iron content, in Fe2O3 equivalent, %, max
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0,01
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0,01
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0,01
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0,01
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0,01
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0,01
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6. Sulphur content, in SO3 equivalent, %, max
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0,1
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0,1
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0,1
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0,1
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0,15
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0,15
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7. Phosphates content, in Р2O5 equivalent,
%, max
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0,01
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0,01
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0,01
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0,01
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0,01
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0,01
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8. Content of chlorides, in Cl - equivalent, %,
max
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0,01
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0,01
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0,01
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0,01
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0,015
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0,015
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9. Content of residue not soluble in hydrochloric acid, %, max
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0,1
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0,1
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0,25
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0,25
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0,25
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0,25
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10. Moisture content, %, max
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0,3
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0,3
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0,3
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0,3
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0,3
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0,3
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11. Bulk density, g/sm3, min
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1,8
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no standard
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1,8
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no standard
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1,6
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no standard
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12. Residual on sieve with mesh No. 1,6 according to GOST 6613
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absent
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absent
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absent
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absent
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absent
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absent
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13. Pass through mesh No. 0,1 according to GOST 6613, %, max
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20
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no standard
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20
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no standard
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20
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no standard
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14. Content of magnetic inclusions with the size over 250mkm under
magnetic field intensity of not less then 1,2х106 А/М (15000
oersteds), created in 138?Т-SEM magnetic separator gap under current 7,5 А,
%
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absent
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no standard
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absent
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no standard
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absent
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no standard
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