Phosphate ore dressing process considerations

Jinning County, its territory has large reserves (proven reserves of 800 million tons), shallow, ore concentrate, high quality, processing performance, easy exploitation of phosphorus ore resources famous in the world, "Chinese phosphorus," he said. Phosphate rock is an important chemical mineral raw material. Part of the phosphate rock is used to prepare pure phosphorus (yellow phosphorus, red phosphorus) and chemical raw materials, and a small amount is used as animal feed. Red phosphorus is used to make matches and phosphides. Yellow phosphorus is highly toxic, can be used to make pesticides, and can also be used to make incendiary bombs, tracer bombs, signal bombs, smoke bombs, and pyrophoric agents; phosphorus and boron , indium , and gallium phosphides are used in the semiconductor industry. Refining the metallurgical industry for phosphor bronze, phosphorus-containing pig iron and cast iron. Zirconium phosphate, titanium phosphate, silicon phosphate, etc. can be used as coatings, pigments, binders, ion exchangers, adsorbents, and the like. Sodium phosphate and disodium hydrogen phosphate are used to purify boiler water. The latter can also make rayon. Sodium hexametaphosphate can be used as a softener and metal preservative for water, calcium phosphate is used as an animal feed additive, and a derivative of phosphorus is used in medicine. The aluminum dihydrogen phosphate rubber material has high refractoriness, good impact resistance, strong corrosion resistance and superior electrical properties, and is used in cutting-edge technology. Fluorite apatite crystals are the most ideal laser emitting materials, and phosphate glass lasers have been used.

When determining the beneficiation test plan or recommended process, various methods should be selected and compared. The selection of mineral processing methods must be guided by the general line of “dancing with strength, striving for the upper reaches, building socialism more quickly and economically”, and the party’s series of guidelines and policies on economic construction, specifically analyzing technical and economic factors and considering the factors. Trade-offs make the selected method realistic, reliable, advanced and economical. The following are general principles to consider.

1. Adopt advanced mineral processing technology, vigorously improve the mineral processing index, make full use of ore resources, and meet the smelting requirements. The method chosen should ensure the production of high quality concentrates, increase metal recovery and labor productivity, reduce production costs and shorten construction periods.

2. For the multi-metallic iron ore, comprehensive consideration must be given to the comprehensive utilization of all useful components, and the tailings and wastewater in the beneficiation production should be used as comprehensively as possible.

3. Pay attention to labor protection and environmental sanitation. For example, avoid using toxic agents such as cyanide or fluoride, and use dry selection of fine ore as little as possible.

4. The method of selection should strive to be simple and reliable, easy to produce operation and management; the use of complex methods must have obvious technical and economic effects.

5. The method chosen should be adapted to the local construction conditions. For example, the ore reserves in the mining area are abundant, the concentrator has a long service life, and a perfect process should be adopted; the mines with scattered resources, such as sand mines, should adopt a light and efficient method to facilitate the construction of a mobile concentrator; Areas should avoid dry selection; areas with poor transportation and poor machining capacity should adopt simple methods; the main raw materials for mineral processing, such as pharmaceuticals, fuels and media, should be considered locally.

6. The improvement of the production and processing plant process must make full use of the original production base, including plant, equipment and production experience.

7. The method chosen should be proven to be effective and reliable through production or testing. For example, new technologies must be tested and qualified before they can be used; equipment used should be shaped or temporarily finalized.

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