PVC resin, physical appearance is white powder, non-toxic, odorless. Relative density 1.35-1.46, refractive index 1.544 (20 ℃) insoluble in water, gasoline, alcohol and vinyl chloride, soluble in acetone, dichloroethane, xylene and other solvents, chemical stability is very high, has good plasticity. PVC resin can be processed into a variety of plastic products, according to its use can be divided into two categories of soft and hard products, mainly used in the production of transparent It is mainly used to produce transparent sheets, pipe fittings, gold cards, blood transfusion equipment, soft and hard pipes, plates, doors and windows, profiles, films, electrical insulation materials, cable sheaths, blood transfusion materials, etc.
Pvc Resin Sg-5,Polyvinyl Chloride Pvc Resin,Polyvinyl Chloride Pvc Sg5,White Powder Pvc Resin Sg5 Hebei Fengse New Material Technology Co.ltd. , https://www.hbfengsechemical.com
Figure 2 Western Gold Mine sector face filling method scarps
1- prospecting roadway; 2-transport roadway; 3-lower roadway; 4-electric chamber; 5-electric winch;
6-slip well; 7-uphill; 8-fan interface; 9-waste stone retaining wall; 10-blast hole
Plan of wall-filling mining method
The wall-cutting method is mainly used to mine extremely thin ore bodies that are steeply inclined, and is also used to mine gently inclined ore bodies in individual mines.
When mining steeply inclined veins, they can be divided into two schemes: manual mining and mechanical transportation according to the different methods of ore transportation in the stope. Most mines currently using such mining methods in China still use manual mining schemes, and only small electric rafts and small scrapers are used to transport ore in individual mines. The typical scheme is shown in Figure 1.
Figure 1 steep tilting wall filling method
1-transport lane; 2-patio; 3-cushion; 4-mineral vein; 5-return tunnel;
6-top column; 7-electric winch; 8-ore slip; 9-pass patio; 10-fill
When mining gently inclined veins, according to the different working face forms, the following schemes can be divided into: the inclined working face cutting wall filling method and the walking wall wall cutting filling method.
The typical scheme of the gently inclined wall filling method is shown in Figure 2.