Phosphate ore flotation

Flotation is phosphate rock beneficiation main methods for magmatic ore apatite and metamorphic rock phosphate ore, since more phosphate was progenitor dissemination size, may be good or better floating directly by flotation Flotation of phosphorus minerals, water glass, sodium carbonate as a regulator, barium sulphate soap or oxidized stone soap as a collector , can obtain good indicators, and magnetic recovery method can be used to recover the associated iron minerals.

For sedimentary phosphorite ore, according to the type and content of gangue minerals contained therein, it can be divided into siliceous, calcareous and transitional (silicolithic and calcareous).

The inlaid blisters of white phosphorus minerals (mainly collophanite) are fine, and the floatability of such ores leads to complicated flotation process, and the beneficiation index is far worse than that of apatite ore. The gangue minerals (mainly quartz ) in rock ore are still quite different from the floatability of phosphorus minerals, and can directly float phosphorus minerals, siliceous calcium phosphate rock and calcium siliceous phosphorus rock. The gangue minerals of the ore are mainly calcite and dolomite. At this time, the phosphorus mineral can be directly floated, or the carbonate gangue can be removed by reverse flotation, or the combination of positive flotation and reverse flotation Calcium-based phosphorite ore can be treated by roasting-digestion (or scrubbing grading, flotation).

For the weathered loose phosphate rock, it can be pretreated by wiping mud and then sorted by other methods. For the pre-selection of phosphate rock, in addition to the general screening and classification, there are optoelectronics with promising prospects. Sorting and heavy media sorting. Photoelectric sorting has been applied to the Conda phosphate mine in Idaho, USA, and heavy medium beneficiation has been applied to the Karading Phosphorus ore dressing plant in the Soviet Union.

Die Casting Products

At present, the die casting industry mainly die casts aluminum alloy, zinc alloy and magnesium alloy, as well as a small amount of copper alloy and other metal die casting parts. Since die-casting uses molds to form, a relatively long mold manufacturing cycle is required in the early stage, and the production efficiency is high after the mold is manufactured. Therefore, for die casting products, it is especially suitable for mass production, with relatively low cost and high efficiency. However, since the die-casting material is a metal material, it is more difficult to demould compared with the plastic material, so a relatively large demolding slope needs to be used, and the shrinkage of the metal itself causes the precision not to be very high. For positions that require precision assembly, subsequent secondary CNC machining is usually required to achieve the accuracy requirements. Die casting parts can be seen everywhere in industries such as automobiles, lighting, machinery, communications, electronics, and home appliances. Some die-casting products as shown below: