PRODUCTS
- Flotation Concentrates from Natural Graphite – fine ground
- Graphite-Coke Filling Agent
- Synthetic Materials Rich in Carbon
Petrol-Coke Powder - Foundry Coke with Low Content of Sulphur - Fine Ground
Amorphous graphite
Flotation Concentrates from Natural Graphite – fine ground
Generally
The company Grafitové doly Staré Mesto, a.s. continues in the tradition of many years in the mining and production of microcrystalline graphite, which began already in the 1980s in the location of Staré Mesto pod Snežníkem.
| Product | Combustibles [%] |
Sulphur max. [%] |
Humidity max. [%] H2O |
Grain size Screen residue 0,08 mm [%] |
|---|---|---|---|---|
| SM 00 | 70-75 | 1 | 5 | 15 |
| SM 0 | 65-70 | 1,5 | 5 | 15 |
| SM I | 60-65 | 2 | 5 | 15 |
Description
Natural graphite is - due to its excellent physicochemical characteristics such as thermal and electric conductivity, heat resistance, chemical stability and lubricating abilities – used in many industries.
Use
- For preparation of carbon dressing directly in foundries manufacturing iron castings with foliate and spheroidal graphite
- As a component for production of black foundry dressings of grey and spheroidal cast iron
- For production of metallurgical ceramics (spout materials, stuffing boxes for blast furnaces)
- For preparation of lubricants in boiler houses, crane tracks
- In glass works as a colouring agent for glass batch
Advantages
- Easy solubility
- Smooth surfaces of castings
- Work in odourless, smoke-free and harmless environmentIndex kvality dle ČSN 72 1550
Packing
- Paper bags with polyethylene liner - 50 kg each placed on one-way pallet – of EUR size pallet secured by shrinking foil
- BIG BAG 700 kg each, placed on one-way pallet of EUR size pallet
Delivery
- On customer’s request we are able to ensure transport of goods to the customer
- On customer’s request we would issue certificate for each delivery
- On customer’s request we would ensure laboratory testing of each delivery
Contact
- for more information please contact us – by the form WRITE
US
or at the stated address CONTACT - Please, send us orders in written, fax or e-mail form
Graphite SM 00 - SM I
Graphite products from the company Grafitové doly Staré Mesto, a.s. in classes SM 00 - SM I, are manufactured according to CSN 72 1550 in the flotation mill in Malé Vrbno at Staré Mesto from the raw material of the deposit KONSTANTIN.
1. Classification enlistment of graphite from the location of KONSTANTIN
1.1.
Graphite from the location of KONSTANTIN belong to the transition type graphite between clearly crystalline (0.001 mm) and crypto-crystalline (0.01 mm). Using a electroscope it was verified that even the smallest particles exhibit a crystalline character /Tacl, Slačík, Bluml 1974/. Graphite aggregates with an uneven aggregate area in the sizes from macro to submicroscopic lamellar or plate structures are tipical.
With regards to the classification of graphite no. stated by V. Kříž /1972/, the raw material from the location KONSTANTIN corresponds to crystalline graphite, partially to fine crystalline graphite (up to the limit of 0.050 mm), partially to the coarsely crystalline (above the limit of 0.50 mm), with a share of crypto-crystalline graphite (under 0.001 mm) /Kmošťák a kol. 1973/. The graphite concentrate is a mix of the stated types. According to the latest analysis, the medium size of the crystals (aggregates) is 0.08 mm.
1.2.
Development wise, it is a matter of a metamorphic graphite deposit, which occurred during the regional metamorphosis into graphite carbon of the rich rocks, whose rock-forming minerals participate in the composition of the graphite raw material (stock) and also the product.
2. Spectral analysis /Kmošták a kol./
| Sample | Main | Secondary | Microelements | Negatvie |
|---|---|---|---|---|
| stock | Al C Ca Fe K Si | Mg Mn Na Ti | As B Ba Be Co Cu Ga Mo Ni Pb V Zn Zr |
Ag Au Bi Cd Cr Ge In Sb Sn Sr W |
3. Chemical analysis
3.1. Stock
| Determined element | Content in % | Determination method |
|---|---|---|
| SiO2 | 56,09 | Gravimetric |
| TiO2 | 0,48 | Spectral-photometric |
| Al2O3 | 18,95 | Titration |
| Cr2O3 | - | - |
| Fe2O3 | 14,13 | Spectral-photometric |
| MnO | 0,21 | Spectral-photometric |
| MgO | 3,56 | Titration |
| CaO | 0,82 | Titration |
| Na2O | 1,00 | Flame-photometric |
| K2O | 3,94 | Flame-photometric |
| P2O2 | 0,32 | Spectral-photometric |
| SO3 (in original sample) | 0,08 | |
| SO3 | 0,04 | |
| Loss by annealing | 31,04 | |
| Sum | 99,54 |
The stated chemical analysis resembles the average type of raw material
from the KONSTANTIN deposit.
The chemical analysis of the flotation concentrates only differ in
the content of burnable substances, the analysis of the silicate remains
(ashes after annealing) does not exhibit significant differences compared
to the analysis of the stock.
4. Conclusion
Graphite concentrates class SM 00 - SM I are with regards to mineralogy classified as heterogeneous mix of graphite, which includes the size of the crystalline specimens (aggregates) in the range from crypto-crystalline to fine crystalline with a medium crystals (aggregates) size of 0.08 mm. The silicate remains up to 100% is composed of rock- forming minerals of the mother rock (para - gneiss, graphite slate), where the main parts are flint, spar, hornblende and mica (see the chemical composition according to the table 3.1.). The volatile ingredients are resembled by SO3, whose amount depends on the pyrite (Fe S2) in the stock and thereby also in the product.
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