Collector for flotation collecting ilmenite and its preparation method

Abstract

The invention discloses a collector to float and collect ilmenite and preparing method, which comprises the following parts: oleic acid, powdered ore floatation agent, emulsifier and alkaline.

Description

technical field [0001] The invention relates to a collector used for flotation to collect ilmenite, which belongs to the field of metallurgy. Background technique [0002] The main mineral composition of ilmenite is ferrous metatitanate (FeTiO 3 ), is an important raw material for the preparation of titanium dioxide, high titanium slag and other products. [0003] Primary ilmenite, its gangue minerals mainly include magnetite, titanium pyroxene, plagioclase, hornblende, pyrite, pyrrhotite and other minerals, and its flotation raw ore composition is finer, -200 Mesh (200 mesh = 0.074mm, less than 200 mesh, usually represented by -200 mesh or -0.074mm; greater than 200 mesh, represented by +200 mesh or +0.074mm) content accounts for more than 85%, which is a refractory mineral. The common process flow for processing coarse-grained ilmenite is: gravity separation-electric separation process; the common process flow for fine-grained ilmenite is: strong magnetic-flotation proce...

AI Technical Summary

Problems solved by technology

Among the selected materials, due to the similar magnetic properties of titanite and ilmenite, they are initially enriched by strong magnetism, and the materials entering the flotation are mainly composed of titanite, ilmenite, magnetite and some sulfide minerals, while titanium The minerals of pyroxene and ilmenite both contain iron and titanium ions, and the active points of the floating titanium collector are iron ions and titanium ions, so that the flotation behavior of ilmenite and titanium pyroxene is similar. This increases the difficulty of ilmenite flotation separation

[0006] Conventionally used floating titanium collectors mainly include MOS, ROB, HO, R-2, R-3, oxidized paraffin soap and emulsified tall oil, but these collectors have high price, narrow adaptable pH range, Poor stability of flotation index, large consumption of collector, unsatisfactory flotation index, etc.

Among them, the unsatisfactory collector flotation index is mainly manifested in (1) low concentrate recovery rate, high tailings grade, and low selectivity; (2) lack of sensitivity to sulfuric acid, and the gradual increase in the flotation operation section Small grade range

[0007] At present, only MOS is used in the collection of flotation ilmenite. The main component of MOS is oleic acid, which contains toxic benzyl arsenic acid. There are also problems with MOS: (1) The amount of collector is too large, because MOS The contained water is relatively large, and the quality of oleic acid is poor; at the same time, MOS needs to be floated at a low pH value (pH value is about 5.5), and the consumption of medium-adjusting agent sulfuric acid is large, and the SO contained in the pulp 4 2- More, it forms competitive adsorption with the anions in the flotation agent, and the amount of collector is large; (2) The collection ability of coarse-grained ore particles is not strong, especially for coarse-grained ilmenite above +200 mesh The recovery effect is poor, and the particle size recovery rate is low; (3) The selectivity deviation of the roughing operation can only control the TiO 2 The grade is about 34%, which increases the burden on the follow-up beneficiation operation to select qualified titanium concentrates

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