Anionic collector for normal temperature flotation of hematite and preparation method thereof

Abstract

The invention relates to an anionic collector for normal temperature flotation of hematite and a preparation method thereof. The anionic collector is prepared from the following raw materials in parts by weight: 12.5-70.0 parts of gutter oil fatty acid, 12.5-70.0 parts of naphthenic acid, 2.0-20.0 parts of N-dilauroyl ethylenediamine sodium triacetate, 1.0-20.0 parts of coconut oil disodium polyoxyethylene sulfosuccinate and sodium hydroxide in an amount which is 0.2 times the total parts by weight of the gutter oil fatty acid and the naphthenic acid. The preparation method of the anionic collector comprises the following steps: stirring the gutter oil fatty acid, the naphthenic acid and the sodium hydroxide for 40-45 minutes at 85-95 DEG C to perform saponification; saponifying for 5-10 minutes after cooling to 30-40 DEG C, adding the N-dilauroyl ethylenediamine sodium triacetate and the coconut oil disodium polyoxyethylene sulfosuccinate, stirring for 5-10 minutes and curing to obtain the anionic collector. According to the method, ore concentration is performed at the normal temperature of 20-25 DEG C, so that the energy consumption is reduced, the energy is saved, the environment is protected, the cost is low, the collection capacity is high, the selectivity is good, the operation concentrate grade is kept, the operation recovery rate is improved, the cost of a flotation reagent is reduced, the waste cooking oil fatty acid is used as a raw material, and a new approach is developed for recycling of gutter oil.

Description

technical field [0001] The invention relates to a beneficiation agent for hematite, in particular to an anion collector for normal temperature flotation of hematite and a preparation method thereof. Background technique [0002] Hematite ore is an important type of iron ore in my country, and its beneficiation occupies an important position in the beneficiation of iron ore in my country. Relevant literatures at home and abroad have reported that hematite anion collectors, such as RA series, MZ series, LKY, KS series, etc., generally require a flotation temperature of 30-43 °C, and the flotation pulp is almost all year round. All have to be heated, which consumes a lot of energy. [0003] For the reverse flotation of normal temperature hematite, there are relevant reports, such as CN101618369A discloses a hematite low-temperature flotation agent and a preparation method, the synthesized sodium 2-hydroxy-5-butylbenzamide and sodium laurate Mixed iron selection, but the conce...

AI Technical Summary

Problems solved by technology

According to relevant literature reports at home and abroad, hematite anion collectors, such as RA series, MZ series, LKY, KS series, etc., generally require a flotation temperature of 30-43°C, and the flotation pulp is almost must be heated, which consumes a lot of energy

[0003] Reverse flotation of normal temperature hematite has related reports, such as CN101618369A discloses a kind of hematite low-temperature flotation agent and preparation method, the synthetic 2-hydroxyl-5-butylbenzamide sodium and sodium dodecanoate Mixed iron selection, but the concentrate grade is only 50.8%, and the concentrate grade is only 58.8% when the temperature rises to 28°C, which cannot meet the basic requirements of 66-68% iron grade in ironworks