- Vermiculite[9]
- Other Agriculture Products[1]
- Other Fireproofing Materials[8]
- Other Heat Insulation Materials[7]
- Mica[6]
- Insulation Materials & Elements[4]
- Barite[10]
- Abrasives[9]
- Other Metals & Metal Products[1]
- Refractory[1]
- Perlite[8]
- Sand[7]
- Cobbles & Pebbles[1]
- Granite[3]
- Talc[6]
- Other Ore[5]
- Carbonate[10]
- Ceramics[1]
- Other Non-Metallic Minerals & Products[10]
- Organic Fertilizer[4]
- Agrochemicals & Pesticides[3]
- Potassium Fertilizer[2]
- Sepiolite[10]
- Other Chemicals[1]
- Water Filters[2]
- Other Non-Metallic Mineral Deposit[10]
- Other Loose Beads[1]
- Filter Aids[10]
- Chemical Auxiliary Agent[2]
- Alkali[4]
- Oxide[1]
- Contact Person : Ms. Bai Xueyan
- Company Name : Shijiazhuang Kedahua Imp. & Exp. Trade Co., Ltd.
- Tel : 86-311-89687086
- Fax : 86-311-86040662
- Address : Hebei,Shijiazhuang,No.345 Youyi North Street, Xinhua District
- Country/Region : China
- Zip : 050000
Black volcanic stone
Size:1-3mm,3-5mm,5-7mm,7-10mm,5-10mm;1-2cm,2-4cm,3-5cm,4-8cm,5-10cm,etc
1.Chemical Composition:
SiO2 | CaO | MgO | Fe2O3 | FeO | Al2O3 | TiO2 | K2O | Na2O |
53.82% | 8.36% | 2.46% | 9.08% | 1.12% | 16.89% | 0.06% | 2.30% | 2.55% |
2.Properties:
1.It has lots of holes.
2.Weight is very light.
3.Perfect intensity
4.Heat preservation and thermal insulation, noice insulation.
5.Fireproofing
6.Corrosion and acid-base resisting
7.Non-pollution and no radioactivity, environment protection
3.Physical properties:
Volume-weight(kg/m3) | 430-870 |
Water absorption | 11.7-17.03% |
Loose volume-weight(kg/m3) | 520 |
Cylinder pressure strength | 1.218Mpa |
Moisture | 1% |
Mechanical Intensity | 5.08Mpa |
Heat conductivity coefficient w/(m.k) | 0.326 |
Soften coefficient | 0.84 |
Apparent density | Kg/m 3 640-860/(390*240*190) |
Hollow ratio(%) | 48/(390 *240 *190) |
4.Usage:
Lava is used in construction,irrigation works, grinding, filter material, barbecue charcoal, garden scene, soilless culture, etc. It is also a perfect material used in hot stone therapy, which is good to Promote the body's metabolism.
The pictures following are taken by real products:
Alibaba Certificate:
My Mobile: 86 13722996216
Black volcanic stone
