Industrialization method of oxygen pressure acid leaching of primary uranium molybdenum ore

Abstract

The invention belongs to the technical field of oxygen pressure acid leaching of primary uranium and molybdenum ores, and specifically relates to a method for the existing uranium and molybdenum leaching process, which has poor adaptability to mineral property changes, low molybdenum leaching rate, low resource utilization rate, large potential environmental risk and high cost. Problem, the proposed industrialized method for leaching primary uranium and molybdenum ore; including the following steps: Step 1, grinding, grading, and pulping uranium and molybdenum symbiotic raw ore; Step 2, adding 92.5%-98% concentration of sulfuric acid to the pulp for pre-leaching ; Use the recovered steam to preheat to 80-90°C; Step 3, the preheated slurry is continuously sent into the horizontal pressurized reactor through the slurry pump, and the first stage of the horizontal pressurized reactor is continuously stirred , continuously obtain leached pulp; step 4, the obtained leached pulp is recovered steam through flash evaporation equipment for preheating raw pulp. The temperature of the pulp is lowered to below 110°C; step 5, the pulp is further heat-exchanged with the washing cold water, through solid-liquid separation, the slag is removed to the tailings pond, and the filtrate enters the next process.

Description

technical field [0001] The invention belongs to the technical field of oxygen pressure acid leaching of primary uranium and molybdenum ores, and in particular relates to an industrialized method for oxygen pressure acid leaching of primary uranium and molybdenum ores. Background technique [0002] my country's molybdenum resources are very rich, but most of them belong to complex and polymetallic associated ores that are difficult to select. Using the conventional stirring leaching method, the leaching recovery rate is very low, and the waste of resources is serious. Uranium-molybdenum paragenetic ore has high economic value, but because some ores have poor ore-forming properties, low grade, and high degree of oxidation of molybdenum, it is difficult to enrich the useful metals by using traditional physical or chemical beneficiation techniques. Due to the complex existence of forms, in addition to molybdenum minerals such as molybdenum, iron molybdenum, molybdenum calcium o...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of the existing uranium and molybdenum leaching process, such as poor adaptability to changes in mineral properties, low molybdenum leaching rate, low resource utilization rate, large potential environmental risk, and high cost, to propose an industrialized method for leaching primary uranium and molybdenum ore

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