Combined use method of iron ore anion reverse flotation desulfurizing and silicon reducing agent

An anion and reverse flotation technology, used in flotation, solid separation, etc., can solve the problems of the impact of the sorting process, the difficulty of removing sulfur, and the difficulty of eliminating foam, and achieve the effect of reducing the cost of chemicals and simplifying the process flow.

An anion and reverse flotation technology, used in flotation, solid separation, etc., can solve the problems of the impact of the sorting process, the difficulty of removing sulfur, and the difficulty of eliminating foam, and achieve the effect of reducing the cost of chemicals and simplifying the process flow.

CN101653747BInactive Publication Date: 2012-10-24SINOSTEEL MAANSHAN INST OF MINING RES
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Embodiment Construction

[0025] In order to further describe the present invention, the combined use method of iron ore anion reverse flotation desulfurization desiliconization agents of the present invention will be further described in conjunction with the examples below.

[0026] The test ore samples were taken from a large iron mine in China. The results of chemical multi-element analysis and iron phase analysis of the raw ore are shown in Table 1 and Table 2. It can be seen from Table 1 and Table 2 that the main useful mineral in the ore is hematite, followed by false hematite, and the iron content of magnetite is relatively small, accounting for only 2.08 percentage points, while that of hematite is relatively small. Iron accounts for 84.68 percent and belongs to refractory iron minerals. The main impurity in the ore is SiO 2 、Al 2 o 3 , S. Impurity S is high and P is low, desulfurization should be considered while improving the grade of iron ore concentrate.

[0027] Table 1 raw ore chemi...

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Abstract

The invention discloses a combined use method of an iron ore anion reverse flotation desulfurizing and silicon reducing agent, which comprises the following steps: obtaining iron ore rough concentrates through magnetic selection or magnetogravity combined selection of iron ores achieving base unit dissociation through fine grinding, and adopting anion reverse flotation for the desulfurization andsilicon reduction of the obtained rough concentrates, wherein the agent comprises the components in the following types and dosages (computed according to the flotation feeding dry basis): 80-100g / t of ethyl xanthate, 950-1150g / t of NaOH, 450-600g / t of starch, 320-420g / t of CaO and 600-750g / t of anion reverse flotation collector. The method can remove sulfur as a detrimental impurity in the iron ore concentrates while extracting iron and reducing silicon of the iron ores without considering the influence of numerous foams generated by an oil foamer on an iron separation process, lowers the medicament cost, simplifies the process flow, is easy to implement in production, can be widely used for the iron increase, desulfurization and silicon reduction of magnetite separation plants and hematite separation plants, and can also be used for the desulfurizing and silicon reducing flotation of limonite, martite and semi-martite.

Description

technical field [0001] The invention relates to a combined application of iron ore reverse flotation reagents, in particular to a combined use method of iron ore anion reverse flotation desulfurization and silicon reduction reagents, which can be widely used in magnetite dressing plants and hematite dressing plants It can also be used for desulfurization and silicon reduction flotation of limonite, pseudohematite and semi-pseudohematite. Background technique [0002] Both anion reverse flotation and cationic reverse flotation can be used to extract iron and reduce silicon from iron ore. At present, anion reverse flotation is widely used in industry, and the technology is relatively mature. Single iron ore flotation sulfur reduction is also relatively easy to separate under the existing technical equipment. For example, Chinese patent ZL01117501 discloses a combined method of using iron ore anion reverse flotation reagents. It is to adjust the iron ore that has been finely g...

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Application Information

Patent Timeline
24 Oct 2012
Publication
CN101653747B
IPC
B03D1/018
Inventors
李俊宁; 杨任新