Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Mineral dressing collector for poor hematite reverse flotation

A collector and hematite technology, applied in flotation, solid separation, etc., can solve the problems of high viscosity of flotation foam, complex dispensing system, and low collection efficiency, so as to reduce the grade and save heating energy consumption , significant economic benefits

Inactive Publication Date: 2009-06-17
ANSTEEL GRP MINING CO LTD
View PDF0 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Practice has proved that the flotation foam produced by amine cationic collectors in the reverse flotation process has high viscosity, poor selectivity, and low collection efficiency; The temperature is high, the energy consumption is high, and the dispensing system is complicated

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The poor hematite with a raw ore grade of 28.55% is ground for one stage, and the overflow particle size reaches about 60% of -200 mesh, and it is fed into a coarse and fine-grained cyclone. The final coarse-grained concentrate is controlled by fine sieve, its grade is 66.67%, the yield is 17.17%, and the yield is 40.15%. 26.33%, the yield is 8.56%, and the medium ore is re-grinded and returned to the coarse and fine grading cyclone. Spin overflow (fine-grained grade) adopts weak magnetic and strong magnetic separation to remove mud and throw tails. Its grade is 9.95%, the yield is 30.57%, and the yield is 10.66%. Yield 25.93%, yield 40.63%, get mixed magnetism fine sample 200g, make pH adjusting agent transfer to 10 with NaOH; Add 4ml (concentration 2wt%) CaO and make activator; Add 3ml (concentration 5wt%) mineral dressing of the present invention to collect agent, where C 6 h 19 C(OH) 2 C(OH)COOK is 10% (percentage by weight), C 15 h 31 C(OH) 2 C(OH)COOK is 20...

Embodiment 2

[0015] This embodiment adopts the same ore dressing process to carry out pretreatment to the poor hematite of the same grade described in embodiment 1, adds 3.1ml (concentration 5wt%) ore dressing collector of the present invention, wherein C 10 h 21 C(OH) 2 CH 2 COOK is 20% (weight percentage), C 13 h 27 C(OH) 2 CH 2 COOK is 15% (weight percentage), C 16 h 31 C(OH) 2 CH 2 COOK is 12% (weight percentage), C 18 h 35 C(OH) 2 CH 2 COOK is 53% (percentage by weight). Under the condition of 16°C, a reverse flotation separation of one rough, one fine and three sweeps is carried out, and finally the flotation concentrate with a grade of 68.70% and a weight of 112.20g and a grade of 14.10% and a weight of 87.80g are obtained Flotation tailings.

Embodiment 3

[0017] The present embodiment adopts the same ore dressing process to carry out pretreatment to the poor hematite of the same grade described in embodiment 1, adds 2.8ml (concentration 5wt%) ore dressing collector of the present invention, wherein C 11 h 20 C(OH)C(OH)COOK is 20% (percentage by weight), C 14 h 29 C(OH) 2 CH 2 COOK is 9% (percentage by weight), C 17 h 33 C(OH) 2 CH 2 COOK is 20% (weight percentage), C 19 h 37 C(OH) 2 CH 2 COOK is 51% (percentage by weight). Under the condition of 18°C, a reverse flotation separation of one coarse, one fine and three sweeps is carried out, and finally the flotation concentrate with a grade of 68.60% and a weight of 112.50g and a grade of 14.04% and a weight of 87.50g are obtained Flotation tailings.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an ore-dressing agent for use in reverse flotation of lean hematite ore. The collecting agent is a potassium salt of the hydroxy fatty acid and has a chemical molecular formula of R1-C(OH)n1-C(OH)n2-COOK, wherein n1 ranges from 1 to 2, n2 ranges from 0 to 2, and R1 is preferably saturated or unsaturated hydrocarbons having 9 to 19 carbon atoms. According to a molecular design principle, the invention introduces hydroxyl functional groups to alpha positions and beta positions of a fatty acid mixture and adopts potassium hydroxide for saponification. The collecting agent has the advantages of reducing energy consumption due to preparation and use at the normal temperature, reducing use cost due to small dosage, reducing tailings grade during reverse flotation ore dressing operation by improving the technical indexes of reverse flotation, along with obvious economic effect.

Description

technical field [0001] The invention belongs to the technical field of beneficiation agents, and in particular relates to a beneficiation collector selected for reverse flotation of lean hematite. Background technique [0002] The reverse flotation process of lean hematite ore has been widely used in my country in recent years, and has made an important contribution to the iron beneficiation and impurity reduction of iron ore in my country. The types of collectors used in reverse flotation are basically cationic amines and anionic fatty acids. Practice has proved that the flotation foam produced by amine cationic collectors in the reverse flotation process has high viscosity, poor selectivity, and low collection efficiency; The temperature is high, the energy consumption is large, and the dispensing system is complicated. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a novel ore dress...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B03D1/008B03D101/02B03D103/04
Inventor 宋仁峰吕建华陈巍周惠文王忠红陈占金李维兵高国英郭客张长奎
Owner ANSTEEL GRP MINING CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com