Sillimanite-Kyanite
MOQ: 5 tons
Description
Sillimanite-Kyanite are both polymorphs of the mineral Al2SiO5, which means they have the same chemical formula but different crystal structures. . Kyanite is a regional metamorphic product occurring in crystalline schist and gneiss. When heated to 1300℃, kyanite into mullite, is a high-grade refractory material, used in the manufacture of spark plug, nozzle and other high temperature refractory ceramic products. Aluminum can also be extracted, beautiful and transparent crystals can be used as gems, with dark blue as the best.
Beneficiation method:
Cyanite mineral processing, the general use of flotation, magnetic separation, gravity separation three methods, but also the use of electric separation, but often gravity separation flotation. Magnetic separation as a means of impurity removal. The specific beneficiation method, reagent system and separation process should be determined according to the characteristics of ore deposit, ore composition, structural structure and surrounding rock properties. Fine disseminated kyanite ore mainly adopts flotation method. Because the proportion of kyanite minerals and gangue minerals and gangue minerals is not large, gravity is generally not considered.
Sillimanite-Kyanite can both be used as raw materials in the production of high-alumina refractories, which are used in various industries such as steel, cement, and glass.
Development Trend
Both Sillimanite-Kyanite are commonly found in metamorphic rocks and are often used as index minerals to determine the grade of regional metamorphism.
(1) The consumption of kyanite concentrate in the iron and steel industry, the preparation of floor and wall refractory brick will increase greatly; In the glass and ceramic industry, the consumption will be stable.
(2) The requirement of kyanite concentrate is mainly to the direction of high purity, its products to a variety of and high quality development.
(3) The application of gravity separation and reverse flotation technology in the production of ultra-pure kyanite concentrate is promising, and the application technology research and production transformation should be strengthened.
Application
Sillimanite-Kyanite is an important raw material of refractory concrete, plastic and high alumina cement.It can be made into various kinds of mullite clinker, which is widely used in ceramics and precision casting, is also a good expansion agent for amorphous refractories.
Physical And Chemical Indicators
| Chemical Analysis | Guaranteed | Typical |
| Al₂O₃,%,min | 57 | 58 |
| TiO₂,%,max | 2.5 | 0.9-1.1 |
| Fe₂O₃,%,max | 0.8 | 0.8 |
| CaO,%,max | 0.2 | 0.1 |
| MgO,%,max | 0.4 | 0.2 |
| Moisture,%,max | 0.5 | 0.1 |
| Physical dedscription and properties | |
| Kyanite-Sillimanite,% | 93-94 |
| Melting point,℃ | ~1850 |
| Mullite transformation,℃ | 1350-1550 |
| Specific Gravity,kg/m³ | 3200-3500 |
| Bulk density,kg/m³ | 1860-1920 |
| Grain size,mkm | 63-100 |
| Sieve Aperture(microns) | Cumulative retained,% |
| +200 | 4 |
| +160 | 40 |
| +100 | 90 |
| +63 | 99.7 |
Productive Process
1.Raw material quality control including physical and chemical testing.
2.crushing and grinding of bulk raw materials.
3.Packing after quality testing.
Packing And Shipping
Packaging according to safety sea-exporting packing Standard
Dispatch : loading the finished packing material at factory by container Door toDoor
By sea fumigated wooden pallet + plastic belt + plastic film wrap.
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