Is there vermiculite in refractory?
Foreign horticultural vermiculite includes four levels according to the diameter: 3 8mm is No. 1; 2 3mm No. 2, the most commonly used; 1 2mm to No. 3; 0.75 1mm to No. 4, suitable for seed germination. Vermiculite has strong water absorption capacity,
Vermiculite is usually used as lightweight material in refractory field, and its volume density is about 0.5.
Paint, small thermal conductivity, chemical, shipbuilding and other industries. Expanded vermiculite has excellent electrical?insulating?property, and it is stratified structure. It is a good thermal insulation material used in growing seedings, flowers and trees, bulidings, rubber and smelting. I hope my answer will make you satisfied. Refractory contains crystal water and board between its layers. For example, the interlayer of fireproof door contains expanded vermiculite, and after expansion, its specific gravity is 60-180kg& # 47. Electric insulation material. Expanded vermiculite is widely used for thermal?insulation?material and sealing material. Of course, some refractory also uses vermiculite; fireproofing material. Vermiculite is a good refractory material, whose maximum using temperature and unit weight can be repsectively up to 1,100 ℃ and 50-200kg/m3. When it is expanded, it is called expanded vermiculite. It is highly thermal insulated. Hard water softeners and paint. After unripe flake vermiculite is roasted in high temperature, its volume will expand 6- 20 times quickly. Friction materials, its volume can be quickly expanded several times to dozens of times. In addition. Quality expanded vermiculite
In refractory field, vermiculite is usually used as fireproof thermal insulation material.
