Fine fraction ilmenite flotation-gravity separation combined technology

A combined process and ilmenite technology, which is applied in the direction of solid separation, wet separation, chemical instruments and methods, etc., can solve the problems that the best effect cannot be achieved, the recovery and utilization rate of fine-grained ilmenite is not ideal, and achieve The effect of solving serious loss and improving product quality

Inactive Publication Date: 2014-04-16
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

The applicant has carried out enrichment tests on fine-grained ilmenite by using a suspension vibrating conical concentrator, which can greatly simplify the beneficiation process of fine-grained ilmenite and improve the utilization level of ilmenite resources, but only using this equipment It is not always ideal to improve the recycling rate of fine-grained ilmenite, and t

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  • Fine fraction ilmenite flotation-gravity separation combined technology

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Effect test

Embodiment 1

[0009] Embodiment 1: Raw material originates from ilmenite in a certain place, TiO 2 The content is 7.8%, and the process flow diagram is as follows: figure 1 The method shown is carried out. Styrene phosphonic acid is used as collector, sulfuric acid is used as regulator, the dosage is 900g / t of ilmenite, styrene phosphonic acid accounts for 900g / t of ilmenite, sulfuric acid is used to adjust the pH value to 6.13, and the grade of crude concentrate is 20.3%. The rate is 70.27%. Then use a Φ4m suspension vibrating cone concentrator for selection, the taper of the sorting surface is 7°, the vibration frequency is 400 times / min, and the speed is 1.4 m / min, and finally the concentrate of the suspension vibrating cone concentrator is obtained. The grade is 38%, and the recovery rate is 45.31%. A better beneficiation index has been achieved. The following tables 1 and 2 are the results of flotation and re-election in this embodiment respectively.

[0010] Table 1:

[0011] ...

Embodiment 2

[0014] Embodiment 2: raw material originates from ilmenite in a certain place, TiO 2 The content is 12.6%, and the process flow diagram is as follows: figure 1 The method shown is carried out. Emulsified tall oil is used as collector, carboxymethyl cellulose, water glass and sulfuric acid are used as regulators, the amount of emulsified tall oil is 800g / t of ilmenite, and the sum of carboxymethyl cellulose, water glass and sulfuric acid Accounting for 900g / t of ilmenite, the grade of crude concentrate obtained is 23%, and the recovery rate is 80.32%. Then use a Φ4m suspension vibrating cone concentrator for beneficiation. The taper of the sorting surface is 7°, the vibration frequency is 410 times / min, and the speed is 2.0 m / min. Finally, the titanium concentrate of the suspension vibrating cone concentrator is obtained. The concentrate grade is 45%, and the recovery rate is 64.29%. A better beneficiation index has been achieved. The following tables 3 and 4 are the result...

Embodiment 3

[0019] Embodiment 3; Raw material originates from ilmenite in a certain place, TiO 2 The content is 13.06%, and the process flow diagram is as follows figure 1 The method shown is carried out. Adopt oxidized paraffin soap to make collector, sulfuric acid is made adjustment agent, consumption is that oxidized paraffin soap accounts for 800g / t of ilmenite, and sulfuric acid accounts for 850g / t of ilmenite, obtains coarse concentrate grade and is 24%, and the recovery rate is 79.02%. Then use a Φ4m suspension vibrating cone concentrator for beneficiation. The taper of the sorting surface is 7°, the vibration frequency is 430 times / min, and the speed is 1.6 m / min. Finally, the titanium concentrate of the suspension vibrating cone concentrator is obtained. The concentrate grade is 48%, and the recovery rate is 55.31%. A better beneficiation index has been obtained. Tables 5 and 6 below are the results of flotation and re-election in this embodiment, respectively.

[0020] tabl...

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Abstract

The invention relates to a recovery method for ilmenite, in particular to a method for improving the recovery rate of fine fraction ilmenite of 5-100 microns. According to the method, flotation preconcentration is carried out first, and then gravity separation is carried out. The method comprises the steps of (1) flotation, wherein ilmenite with TiO2 concentration of 7-15wt% is subjected to flotation preconcentration, and TiO2 rough concentrate with the concentration of 18-25wt% is obtained; and (2) gravity separation, wherein preconcentration ore is subjected to gravity separation through a suspension vibration conical surface concentrating machine, separation surface taper is 5-10 degrees, vibration frequency is 300-400 per minute, and disc surface edge rotating speed is 0.8-2.5 meters per minute. The method has the advantages that the treating amount is large, the grading index is stable, the recovery rate is high, energy loss is low, sorting efficiency is high, the method is simple, and separation cost is lowered.

Description

technical field [0001] The invention relates to a method for recovering ilmenite, in particular to a method for improving the recovery rate of 5-100 micron fine-grained ilmenite. Background technique [0002] As the mining and utilization of ilmenite resources continue to deepen, ilmenite resources are consumed in large quantities, and the problem of poor and fine ore is becoming more and more prominent. Improving the recovery and utilization rate of fine-grained ilmenite is an important issue for the development of the titanium industry. For example, the vanadium-titanium magnetite resource in Panzhihua, Sichuan is uniquely endowed with more than 93% of the titanium resources in my country, but the utilization rate of its titanium resources is very low. At present, the recovery rate of its ore dressing is only 20-23%. The fine-grained ilmenite is difficult to recover and is lost in the tailings. Suspension vibrating conical concentrator (Chinese patent application number: 2...

Claims

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Application Information

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IPC IPC(8): B03B7/00
Inventor 杨波罗雪梅刘杰贺涛肖日鹏
Owner KUNMING UNIV OF SCI & TECH
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