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Hematite anti-floatation depressor

A reverse flotation and inhibitor technology, applied in the field of beneficiation inhibitors and hematite reverse flotation inhibitors, can solve the problems of waste of resources, elimination, large consumption, etc., and achieve low cost, not easy to deteriorate, and low energy consumption. Effect

Inactive Publication Date: 2015-03-25
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to reasons such as technical and economic indicators, the above-mentioned inhibitors have not been applied in production or have been eliminated.
[0007] At present, the most commonly used reverse flotation inhibitor in domestic hematite concentrators is corn starch, which plays a certain role in increasing iron and reducing silicon, but there are also the following problems: first, corn starch needs to be prepared at a high temperature of 90°C; The selectivity of corn starch is not good enough, the iron recovery rate is low, resulting in waste of resources; the third is the high unit consumption and large amount of corn starch, resulting in excessive consumption of food

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 100 parts by weight of brewing waste residue as the basic raw material and dissolve it in 90 parts by weight of water, control the temperature at 25°C-28°C, stir for 6 minutes, add 10 parts by weight of potassium permanganate to it for oxidation, and stir After 3 minutes, 10 parts by weight of sodium hydroxide was added for causticization, and stirred for 10 minutes to obtain hematite reverse flotation inhibitor.

[0020] Applied to the following flotation environment: a pure hematite mineral (-200 mesh particle size content 70%), in the case of sodium oleate as a collector, the flotation slurry weight percentage concentration is 40%, the flotation pH value 9. When the amount of collector is 600g / t, the floating rate can reach more than 95%. Under this condition, when the above-mentioned inhibitor is added to 500g / t, the floating rate of pure hematite minerals will drop to 50%. If the dosage of inhibitors is increased, when it reaches 1000g / t, the floating rate of ...

Embodiment 2

[0022] Take 100 parts by weight of brewing waste residue as the basic raw material and dissolve it in 110 parts by weight of water, control the temperature at 35°C-38°C, stir for 8 minutes, add 15 parts by weight of potassium permanganate to it for oxidation, and stir 5 minutes, and finally add 18 parts by weight of sodium hydroxide to carry out causticization, and stir for 15 minutes to obtain hematite reverse flotation inhibitor.

[0023] Applied to the following flotation environment: a pure hematite mineral (-200 mesh particle size content 90%), in the case of sodium oleate as a collector, the concentration of flotation pulp is 45% by weight, and the flotation pH is 9.5. When the amount of collector is 550g / t, the floating rate can reach over 95%. Under this condition, when the above-mentioned inhibitor is added to 550g / t, the floating rate of pure hematite minerals drops to 55%. If the dosage of inhibitors is increased, when it reaches 1100g / t, the floating rate of pure h...

Embodiment 3

[0025] Take 100 parts by weight of brewing waste residue as the basic raw material and dissolve it in 100 parts by weight of water, control the temperature at 30°C-35°C, stir for 8 minutes, add 6 parts by weight of potassium permanganate to it for oxidation, and stir 5 minutes, finally adding 5 parts by weight of sodium hydroxide for causticization, and stirring for 12 minutes to obtain hematite reverse flotation inhibitor.

[0026] Applied to the following flotation environment: a pure hematite mineral (-200 mesh particle size content 92%), in the case of sodium oleate as a collector, the concentration of the flotation pulp is 40% by weight, and the flotation pH is 10.5. When the amount of collector is 580g / t, the floating rate can reach over 98%. Under this condition, when the above-mentioned inhibitor is added to 600g / t, the floating rate of pure hematite minerals will drop to 50%. If the dosage of inhibitors is increased, when it reaches 1150g / t, the floating rate of pure ...

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Abstract

The invention relates to a hematite anti-floatation depressor. The hematite anti-floatation depressor is prepared by waste residues produced during bear making, potassium permanganate, sodium hydroxide and water according to the weight proportion of 1:5-20%:4-20%:80-120%. The hematite anti-floatation depressor is easy to prepare, good in floatation effect and low in usage, the defects of maize starch as the depressor are overcome, selectivity of the depressor is improved, iron recovery rate is increased, usage of the depressor is reduced, the requirements of the dressing process are met, sufficiency of iron ore resources for the iron and steel industry in China is ensured, and immoderate reliance and consumption on grains are reduced.

Description

technical field [0001] The invention relates to an ore dressing inhibitor, in particular to a hematite reverse flotation inhibitor, and belongs to the field of ore dressing agents. Background technique [0002] At present, domestic hematite reverse flotation inhibitors are mainly disclosed and industrially applied in the following categories: [0003] 1. CN102443071A discloses a hematite reverse flotation inhibitor compound modified starch and a preparation method thereof. The raw material is starch, sodium hypochlorite is an oxidizing agent, sodium sulfite and sodium nitrite are esterifying agents, and 3-chloro-2-hydroxypropyl Trimethyl quaternary ammonium salt is used as cationic reagent, caustic alkali is used as catalyst, and it is prepared by adding water. The ratio is calculated in parts by weight: 100 parts of raw starch, 0.5-10 parts of sodium hypochlorite, 1.2-7.0 parts of sodium sulfite, 0.2-1.2 parts of sodium nitrite, 3-chloro-2-hydroxypropyl trimethyl quaternar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/06B03D103/04
Inventor 徐冬林潘鹏飞代淑娟朱巨建王长艳张玲吴前锋
Owner ANSTEEL GRP MINING CO LTD
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