Floating technology for low-grade refractory weathering collophanite section desliming

Abstract

The invention provides a floating technology for low-grade refractory weathering collophanite section desliming. The technology comprises the steps that after coarse crushing and fine crushing are carried out on raw ore, a surface treating agent is added, and the raw ore is subjected to washing in an ore washer; washed pulp enters a shaking table to be subjected to a first-section desliming, coarse particle minerals are subjected to next desliming, and fine silt serves as slurry and is processed; the ore grinding treatment is carried out on the coarse particle minerals, ore grinding pulp is subjected to second-segment desliming, deslimed pulp is subjected to the positive and negative floating operation, and floating concentrate and floating tailings are obtained; after concentrating and filtering are carried out on the floating concentrate, a phosphorus concentrate product and concentrate backwater are obtained, the concentrating and the filtering are carried out on positive floating tailings and negative floating tailings, a tailings product and tailings backwater are obtained, deslimed two-section slurry is subjected to the concentrating and the filtering, and a slurry product and slurry backwater are obtained; according to needs, the concentrate backwater, the tailings backwater and the slurry backwater are back to the floating operation and backwater points of the ore washer to be subjected to recycling. The phosphorus concentrate quality can be improved, and the resource utilization of the low-grate collophanite is achieved.

Description

technical field

[0001] The invention belongs to the collophosite flotation technology, in particular to a segmental desliming flotation process of low-grade refractory weathered collophosite. Background technique

[0002] At present, flotation is a main method of collophosite beneficiation, and flotation methods include direct flotation, reverse flotation, positive and negative (inverse) flotation and double reverse flotation, etc. For example: the publication date is 2014.12.03, and the publication number is CN104174504A. The Chinese invention patent document is named "Middle and low grade mixed refractory colloid ore positive flotation and branch flotation method". The specific process of this method is: (1) The mixed collophosite is crushed and ground until the monomers are dissociated; (2) Add positive flotation regulators such as sodium carbonate and water glass and fatty acid anion collectors to the slurry to adjust the slurry and mineralize it, and then inflate it for...

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