A kind of beneficiation method of mechanically demagnesizing collophosite with external medium

Abstract

The invention provides a mineral processing method of mechanical de-magging treating collophanite with additional medium. The mineral processing method comprises the following steps that ore size mixing is conducted to silica-calcium collophanite after breaking treatment, phosphate mineral flotation regulator and collecting agent are added to conduct size mixing and enter a direct flotation system to conduct the phosphate mineral direct flotation after water dilution; direct flotation concentrate conducts the reagent removal and de-sliming and enters a desilicification reverse flotation stirring groove, materials after size mixing enter a reverse flotation desilicification system to conduct the silica gangue mineral reverse flotation; the flotation rough concentrate pulp enters a mechanical cleaning system after concentration, the medium is added to conduct the cleaning and de-sliming for multiple times, and the finished product phosphate concentrate is obtained after cleaning is realized and the concentrate is filtered and dried. The method is economical and practical, the mechanical de-magging method is used without ore grinding and medicine adding, the flotation process is greatly simplified, the mineral processing cost is reduced, the efficiency is high, the content of the magnesium oxide in the obtained phosphate concentrate is relatively low, and the quality of the concentrate is high.

Description

technical field [0001] The invention relates to a collophosite ore beneficiation process, in particular to a process method suitable for further demagnesization of flotation rough concentrate of low-grade siliceous calcium collophosite. Background technique [0002] Sedimentary phosphorite ore (the phosphorus-containing mineral is collophoste) is the most important phosphate rock in the world's phosphate rock resources, accounting for more than 70% of the world's total phosphate rock reserves, of which the largest reserves and the most difficult to select are medium and low grades Especially for low-grade silicon-calcium colloidal phosphate ore, carbonate and silicate impurities must be excluded during the beneficiation process in order to meet the requirements of phosphate fertilizer processing. At present, most of the sorting of this type of ore at home and abroad adopts flotation method for enrichment. The commonly used flotation processes include: positive and negative f...

AI Technical Summary

Problems solved by technology

Among them, the positive and negative flotation process is the beneficiation process that first floats phosphate minerals, then reverses flotation siliceous minerals, and then reverses flotation magnesium-containing minerals. However, the positive and negative flotation processes currently have relatively large limitations. The selection process is long, the three stages of flotation need to add chemicals, and the third stage of reverse flotation magnesium needs to be ground, which greatly increases the cost of ore dressing

Images