First, entrances and exits are at the same intersection. The situation is that the entrance and exit of vehicles are at the same intersection and the same position. In this case we have to make different designs based on the width of the road.
1. When the road width is within 5 meters, a total of two controllers are required for the entry controller and the exit controller. Barriers only need to be equipped with one, because in this case the barriers can be shared.
2. When the width of a road is greater than 5 meters and less than 8 meters, a lane separation design shall be adopted, ie a small safety island shall be built in the middle of the road to place parking fees and equipment to manage access to and from the vehicle.
3. The road is more than 8 meters. At this time, you may consider building a safety island with a guard post in the middle of the road. This will facilitate the user's access and facilitate the management of charges.
Second, the exits and exits are not at the same intersection. Most of the considerations are setting which one is the exit and which is the entrance. In general, the main reference in this area is the direction of circulation of the community vehicles. The intersection is convenient for exit and is set as an exit. If any of them are available, then set the intersection near the administrative office as an exit to facilitate fee management.
Synthetic cryolite is a white crystalline powder or a sandy-size granularity, and a pinkish crystalline powder or a sandy-size granularity as well. Sp.gr.2.95-3.01g/cm3, melting point about 1000°C, specific heat 1.056j/g°C at 18-100°C. It`s slightly soluble in water, but insoluble in anhydrous hydrogen fluoride. The content of its crystal water will be decreased while the increasing of the molecular ratio, therefore its loss on ignition will be also decreased while the increasing of the molecular ratio. After the paste of synthetic cryolite with different molecular ratio dehydrates, the loss on ignition at 800°C will appear 10.34%, 6.22% and 2.56% when the molecular ratio reaches 1.74, 2.14 and 2.63 reactively.
Uses:
It`s mainly used as a flux in the aluminum smelting by fused-salt electrolysis; also an opalizer in the manufacture of enamel; an opacifier and auxiliary solvent of glass and enamel; an insecticide of crops; a flux in aluminum alloy casting; and in the production of ferrous alloy and effervescing steel; as well as a wear-resistant filler for Resin and rubber-boned Abrasive wheels.
Synthetic Cryolite,Synthetic Cryolite Abrasive,Sodium Aluminum Hexafluoride,Industry Grade Synthetic Cryolite
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