Molybdenum roasting process industry
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- Category: Molybdenum knowledge
- Published on 23 July 2014
- Written by ling
- Hits: 719
For now, use more molybdenum roasting process industry, but roasting capacity remains in short supply, lack of ability to make roasted molybdenum oxide and iron in short supply, roasting capacity bottlenecks will molybdenum oxide and molybdenum prices stubbornly high.
The traditional roasting - ammonia leaching process towards the following three main trends:
⑴ roasting stage desulfurization agent or increased by the addition of flue gas treatment processes (citric acid absorption, double alkali, etc.) to reduce SO2 smoke pollution, in addition to the roasting process by increasing the degree of automation to reduce energy consumption and improve calcine quality.
Due to the growing ⑵ grade ore poor, miscellaneous, before calcine leaching by increasing HCl + NH4Cl or HNO3 + NH4NO3 solution leaching pretreatment process to reduce the impurity content and increase metal recovery and quality, reduce processing costs direction.
⑶ the roasting process and ion exchange, solvent extraction Combination to reduce labor intensity and production costs, automated production. As some recent roasting plant on the roasting operation has been improved to produce a "high soluble molybdenum industry" (with high solubility in ammonia solution), by manufacturers Ammonium attention and favor, while significantly improving the ammonia leaching molybdenum recovery.
All-wet process and equipment problems leaching costs are the main factors restricting the development of all-wet process, so full wet process development trend is to find more excellent cheap oxidants, reducing process, reduce equipment requirements and production costs, and with the solvent extraction, ion exchange combination of intelligent development of modern computer-controlled production process.
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