Method for removing sulfur and phosphorus for adsorption ore-dressing

Abstract

This invention is a method of dressing ore and eliminating sulfur and phosphor by adsorption method. Its feature is that agitating barrel is added on existing magnetic separation and reselection technique, iron finished ore selected is added into the barrel and diatomite is added as adsorbent. 8-12 kilogram diatomite is added into every ton iron finished ore, then adsorbent is separated after high speed agitation, so the refined flour ore of P<0.082%,S<0.064% is got. The processing load is big when using this method, equipment is simple, energy consumption of equipment is low, technique cost is low, technique control ability is good, product quality is stable, auxiliary material cost is low and ore dressing cost is low.

Description

technical field

[0001] The invention relates to the technical field of ore dressing, in particular to a method for removing sulfur and phosphorus in ore dressing by adsorption. Background technique

[0002] Phosphorus is symbiotic with iron minerals, and the relationship between sulfide, free sulfur, phosphorus and polymetallic associated ores of iron ore is very close and complicated. The existing process for treating sulfur and phosphorus-containing ores is mainly: magnetic separation, gravity separation-sulfide flotation joint process, which has the following defects:

[0003] (1) The existing flotation process for sulfur and phosphorus removal is complex, especially for phosphorus removal, which requires high temperature (40°C) to remove phosphorus by flotation. The cost is too high and the process technology is difficult to control. It is applied in iron ore , resulting in high cost of iron concentrate, difficult to guarantee quality, and poor commerciality.

[0004] ...