CN102389863A - Method for performing flotation on low-grade phosphate ores by taking H2SiF6 as auxiliary flotation regulator - Google Patents

Method for performing flotation on low-grade phosphate ores by taking H2SiF6 as auxiliary flotation regulator Download PDF

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Publication number
CN102389863A
CN102389863A CN2011102976626A CN201110297662A CN102389863A CN 102389863 A CN102389863 A CN 102389863A CN 2011102976626 A CN2011102976626 A CN 2011102976626A CN 201110297662 A CN201110297662 A CN 201110297662A CN 102389863 A CN102389863 A CN 102389863A
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Prior art keywords
flotation
regulator
sif
auxiliary
low
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CN2011102976626A
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杨兴
曾润国
魏家贵
刘甍
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Kunming Chuanjinnuo Chemical Shares Co Ltd
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Kunming Chuanjinnuo Chemical Shares Co Ltd
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Abstract

The invention discloses a method for performing flotation on low-grade phosphate ores by taking H2SiF6 as an auxiliary flotation regulator, which comprises grinding the phosphate ores, adding the auxiliary flotation regulator, adding a main flotation regulator, stirring and performing the flotation, and specifically comprises the following processes: adding water and crushing the phosphate ores, and grinding until the granularity reaches 100 meshes; guiding ground ore powder slurry into a storage tank, diluting to concentration which is suitable for conventional flotation; then, adding the auxiliary flotation regulator H2SiF6 in proportion of 1.5-6kg/t; adding the main flotation regulator H2SO4 in a head tank, and regulating the pH value of the ore powder slurry until reaching the requirement of the flotation process; and performing the flotation according to the conventional flotation process. In the method for performing flotation on the low-grade phosphate ores by taking the H2SiF6 as the auxiliary flotation regulator, the H2SiF6 or H2SiF6-contained waste liquor generated in the phosphate ore deep processing procedure is adopted to serve as the auxiliary flotation regulator, thereby, the floatation effect on the low-grade phosphate ores is greatly improved, the usage amount of the main flotation regulator H2SO4 is effectively reduced, the production environment is improved, the resources are saved, the production cost is reduced, and the economic benefit is improved.

Description

A kind of with H 2SiF 6Low-grade phosphate ore method for floating as auxiliary floatation regulator
Technical field
The invention belongs to the phosphate rock floating technical field, be specifically related to a kind of use H 2SiF 6As with H 2SO 4Be the auxiliary floatation regulator in the flotation process of phosphorite of floatation regulator, improve the phosphate rock floating effect, reduce sulfuric acid consumption with H 2SiF 6Low-grade phosphate ore method for floating as auxiliary floatation regulator.
Background technology
As the prior art of phosphate rock floating, generally with H 2SO 4, H 3PO 4As floatation regulator.The Chinese patent of announcing on November 29th, 2006 (200510003085) " the adjustment agent that flotation carbonate containing rock phosphate in powder is used "; Provided that " with the raw ore of rock phosphate in powder or concentrate and sulfuric acid is raw material; earlier that raw ore or concentrate is broken with pigment, the adjustment agent that is prepared from the sulfuric acid complete reaction again.The reactant that the present invention adopts the ore pulp of sulfuric acid and raw ore or concentrate fully to react generation in advance comes flotation carbonate-type rock phosphate in powder as the adjustment agent ... " Process.This method need be provided with anterior reactor, and not only investment is big, pre-reaction process H 2SO 4Consumption is very big, and reaction is complicated, wayward.In order to improve the flotation effect of phosphorus ore, reduce H 2SO 4Consumption, improve economy of resources, press for a kind of high efficiency phosphate rock floating method of exploitation.
Summary of the invention
The object of the present invention is to provide a kind of technology easy, flotation efficiency is high, can effectively reduce main floatation regulator H 2SO 4Consumption with H 2SiF 6Low-grade phosphate ore method for floating as auxiliary floatation regulator.
The objective of the invention is to realize like this, comprise that phosphorus ore abrasive dust-Jia assists floatation regulator-Jia master's floatation regulator-stirring-flotation, specifically comprises following operation:
A, phosphorus ore is broken and be ground to granularity and reach 100 orders with pigment;
B, ground breeze slurry is imported in the storage pond and is diluted to the concentration that conventional flotation suit, assist floatation regulator H by the adding of 1.5～6kg/t ratio afterwards 2SiF 6
C, in head tank, add main floatation regulator H 2SO 4, the adjustment pulp PH value reaches the floatation process requirement;
D, carry out flotation by conventional flotation operation.
The present invention adopts H 2SiF 6(fluosilicic acid) or phosphorus ore deep-processing process produce contains H 2SiF 6Waste liquid has improved the flotation effect of low-grade phosphate ore greatly as auxiliary floatation regulator, effectively reduces main floatation regulator H 2SO 4Use amount, improved production environment, practiced thrift resource, reduced production cost, improved economic benefit.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Specific embodiments
Below in conjunction with accompanying drawing and embodiment the present invention is further described, but never in any form the present invention is limited, any conversion based on training centre of the present invention is done all falls into protection scope of the present invention.
Shown in accompanying drawing, the present invention includes the auxiliary floatation regulator of phosphorus ore abrasive dust-Jia-Jia master's floatation regulator-stirring-flotation, specifically comprise following operation:
A, phosphorus ore is broken and be ground to granularity and reach 100 orders with pigment;
B, ground breeze slurry is imported in the storage pond and is diluted to the concentration that conventional flotation suit, assist floatation regulator H by the adding of 1.5～6kg/t ratio afterwards 2SiF 6
C, in head tank, add main floatation regulator H 2SO 4, the adjustment pulp PH value reaches the floatation process requirement;
D, carry out flotation by conventional flotation operation.
To reach 200 purposes in the above granularity of 85%, 100 order accounting for more than 100 orders be 70 ~ 80% to grind size in the described A operation.
The pulp density of the Chu Chizhong of described B operation is 1.30～1.35 kg/m 3
Add auxiliary floatation regulator H in the described B operation 2SiF 6Amount be 2.5～4kg/t.
Add in the described C operation and become owner of floatation regulator H 2SO 4Amount be 30 ~ 55L/t.
Add in the described C operation and become owner of floatation regulator H 2SO 4Concentration be 10%.
Add the collecting agent of oxidized paraffin wax soap in the described D operation as the flotation operation.
The auxiliary floatation regulator H that adds in the described B operation 2SiF 6Be the H that contains that produces in the phosphoric acid extraction process 2SiF 6Waste liquid, H wherein 2SiF 6Concentration be 0.15～0.20kg/L.
The described H that contains 2SiF 6The addition of waste liquid is 15～25kg/t.
Operation principle of the present invention:
What in the phosphoric acid extraction process, produce contains H 2SiF 6The general recovery of waste liquid makes fluosilicate and is used, but this utilizes the technological process of mode complicated, and investment is big.The present invention directly utilizes H 2SiF 6The perhaps above-mentioned H that contains 2SiF 6Waste liquid is as the auxiliary adjustment agent and the H of phosphate rock floating 2SO 4Compound use.Method of the present invention and the independent H that uses 2SiF 6Adjust agent and compare, shortened the reaction time, can improve 20～25% productivity effect; With use H separately 2SO 4Adjust agent and compare, reduced H 2SO 4Consume and production cost, improved the product quality and the rate of recovery of phosphorus concentrate.
Embodiment 1
With the red phosphorus ore of 1 ton of soup is raw material, and grade is 25.5%, with the H that contains that produces in the phosphoric acid extraction process 2SiF 6Waste liquid as auxiliary floatation regulator, wherein H 2SiF 6Concentration be 0.15～0.20kg/L, through the inventive method flotation:
A, phosphorus ore is broken and be ground to granularity and reach 100 orders with pigment, 100 orders are above accounts in the above ground phosphate rock of 85%, 100 order granularity to reach 200 purposes is 70 ~ 80%;
B, ground breeze slurry is imported in the storage pond and is diluted to 1.30～1.35 kg/m 3, add in the 15kg/t ratio afterwards and contain H 2SiF 6Waste liquid as auxiliary floatation regulator;
C, in head tank, add the H of 10 % in the ratio of 55L/t 2SO 4As main floatation regulator, the adjustment pulp PH value reaches the floatation process requirement;
D, add the collecting agent of oxidized paraffin wax soap, carry out flotation by conventional flotation operation as the flotation operation;
Obtain phosphorus concentrate 844Kg after 0.6 hour by the common process flotation, with independent use H 2SO 4Adjust agent and compare, reduce H 2SO 4Consumption 15L improves productivity effect 25.3%.
Embodiment 2
With the red phosphorus ore of 1 ton of soup is raw material, and grade is 25.78%, with the H that contains that produces in the phosphoric acid extraction process 2SiF 6Waste liquid as auxiliary floatation regulator, wherein H 2SiF 6Concentration be 0.15～0.20kg/L, through the inventive method flotation:
A, phosphorus ore is broken and be ground to granularity and reach 100 orders with pigment, 100 orders are above accounts in the above ground phosphate rock of 85%, 100 order granularity to reach 200 purposes is 70 ~ 80%;
B, ground breeze slurry is imported in the storage pond and is diluted to 1.30～1.35 kg/m 3, add in the 25kg/t ratio afterwards and contain H 2SiF 6Waste liquid as auxiliary floatation regulator;
C, in head tank, add the H of 10 % in the ratio of 52L/t 2SO 4As main floatation regulator, the adjustment pulp PH value reaches the floatation process requirement;
D, add the collecting agent of oxidized paraffin wax soap, carry out flotation by conventional flotation operation as the flotation operation;
Obtain phosphorus concentrate 856Kg after 0.6 hour by the common process flotation, with independent use H 2SO 4Adjust agent and compare, reduce H 2SO 4Consumption 19L improves productivity effect 23.6%.
Embodiment 3
With the red phosphorus ore of 1 ton of soup is raw material, and grade is 25.25%, with H 2SiF 6As auxiliary floatation regulator, through the inventive method flotation:
A, phosphorus ore is broken and be ground to granularity and reach 100 orders with pigment, 100 orders are above accounts in the above ground phosphate rock of 85%, 100 order granularity to reach 200 purposes is 70 ~ 80%;
B, ground breeze slurry is imported in the storage pond and is diluted to 1.30～1.35 kg/m 3, add H in the 1.5kg/t ratio afterwards 2SiF 6As auxiliary floatation regulator;
C, in head tank, add the H of 10 % in the ratio of 50L/t 2SO 4As main floatation regulator, the adjustment pulp PH value reaches the floatation process requirement;
D, add the collecting agent of oxidized paraffin wax soap, carry out flotation by conventional flotation operation as the flotation operation;
Obtain phosphorus concentrate 861Kg after 0.6 hour by the common process flotation, with independent use H 2SO 4Adjust agent and compare, reduce H 2SO 4Consumption 18L improves productivity effect 24.13%.
Embodiment 4
With the red phosphorus ore of 1 ton of soup is raw material, and grade is 25.71%, with H 2SiF 6As auxiliary floatation regulator, through the inventive method flotation:
A, phosphorus ore is broken and be ground to granularity and reach 100 orders with pigment, 100 orders are above accounts in the above ground phosphate rock of 85%, 100 order granularity to reach 200 purposes is 70 ~ 80%;
B, ground breeze slurry is imported in the storage pond and is diluted to 1.30～1.35 kg/m 3, add H in the 6kg/t ratio afterwards 2SiF 6As auxiliary floatation regulator;
C, in head tank, add the H of 10 % in the ratio of 30L/t 2SO 4As main floatation regulator, the adjustment pulp PH value reaches the floatation process requirement;
D, add the collecting agent of oxidized paraffin wax soap, carry out flotation by conventional flotation operation as the flotation operation;
Obtain phosphorus concentrate 866Kg after 0.6 hour by the common process flotation, with independent use H 2SO 4Adjust agent and compare, reduce H 2SO 4Consumption 25L improves productivity effect 25.23%.
Embodiment 5
With 1 ton of A Wang phosphorus ore is raw material, and grade is 27.18%, with the H that contains that produces in the phosphoric acid extraction process 2SiF 6Waste liquid as auxiliary floatation regulator, wherein H 2SiF 6Concentration be 0.15～0.20kg/L, through the inventive method flotation:
A, phosphorus ore is broken and be ground to granularity and reach 100 orders with pigment, 100 orders are above accounts in the above ground phosphate rock of 85%, 100 order granularity to reach 200 purposes is 70 ~ 80%;
B, ground breeze slurry is imported in the storage pond and is diluted to 1.30～1.35 kg/m 3, add in the 20kg/t ratio afterwards and contain H 2SiF 6Waste liquid as auxiliary floatation regulator;
C, in head tank, add the H of 10 % in the ratio of 34L/t 2SO 4As main floatation regulator, the adjustment pulp PH value reaches the floatation process requirement;
D, add the collecting agent of oxidized paraffin wax soap, carry out flotation by conventional flotation operation as the flotation operation;
Obtain phosphorus concentrate 836kg after 0.6 hour by the common process flotation, with independent use H 2SO 4Adjust agent and compare, reduce H 2SO 4Consumption 21L improves productivity effect 22.1%.
Embodiment 6
With 1 ton of A Wang phosphorus ore is raw material, and grade is 27.45%, with H 2SiF 6As auxiliary floatation regulator, through the inventive method flotation:
A, phosphorus ore is broken and be ground to granularity and reach 100 orders with pigment, 100 orders are above accounts in the above ground phosphate rock of 85%, 100 order granularity to reach 200 purposes is 70 ~ 80%;
B, ground breeze slurry is imported in the storage pond and is diluted to 1.30～1.35 kg/m 3, add H in the 4kg/t ratio afterwards 2SiF 6As auxiliary floatation regulator;
C, in head tank, add the H of 10 % in the ratio of 40L/t 2SO 4As main floatation regulator, the adjustment pulp PH value reaches the floatation process requirement;
D, add the collecting agent of oxidized paraffin wax soap, carry out flotation by conventional flotation operation as the flotation operation;
Obtain phosphorus concentrate 851Kg after 0.6 hour by the common process flotation, with independent use H 2SO 4Adjust agent and compare, reduce H 2SO 4Consumption 25L improves productivity effect 20.9%.
Embodiment 7
With 1 ton of A Wang phosphorus ore is raw material, and grade is 27.32%, with H 2SiF 6As auxiliary floatation regulator, through the inventive method flotation:
A, phosphorus ore is broken and be ground to granularity and reach 100 orders with pigment, 100 orders are above accounts in the above ground phosphate rock of 85%, 100 order granularity to reach 200 purposes is 70 ~ 80%;
B, ground breeze slurry is imported in the storage pond and is diluted to 1.30～1.35 kg/m 3, add H in the 2.5kg/t ratio afterwards 2SiF 6As auxiliary floatation regulator;
C, in head tank, add the H of 10 % in the ratio of 35L/t 2SO 4As main floatation regulator, the adjustment pulp PH value reaches the floatation process requirement;
D, add the collecting agent of oxidized paraffin wax soap, carry out flotation by conventional flotation operation as the flotation operation;
Obtain phosphorus concentrate 857Kg after 0.6 hour by the common process flotation, with independent use H 2SO 4Adjust agent and compare, reduce H 2SO 4Consumption 22L improves productivity effect 21.9%.

Claims (9)

1. one kind with H 2SiF 6Low-grade phosphate ore method for floating as auxiliary floatation regulator is characterized in that comprising that phosphorus ore abrasive dust-Jia assists floatation regulator-Jia master's floatation regulator-stirring-flotation, specifically comprises following operation:
A, phosphorus ore is broken and be ground to granularity and reach 100 orders with pigment;
B, ground breeze slurry is imported in the storage pond and is diluted to the concentration that conventional flotation suit, assist floatation regulator H by the adding of 1.5～6kg/t ratio afterwards 2SiF 6
C, in head tank, add main floatation regulator H 2SO 4, the adjustment pulp PH value reaches the floatation process requirement;
D, carry out flotation by conventional flotation operation.
2. according to claim 1 with H 2SiF 6Low-grade phosphate ore method for floating as auxiliary floatation regulator is characterized in that: to reach 200 purposes in the above granularity of 85%, 100 order accounting for more than 100 orders be 70 ~ 80% to grind size in the described A operation.
3. according to claim 1 with H 2SiF 6As the low-grade phosphate ore method for floating of auxiliary floatation regulator, it is characterized in that: the pulp density of the Chu Chizhong of described B operation is 1.30～1.35 kg/m 3
4. according to claim 1 with H 2SiF 6Low-grade phosphate ore method for floating as auxiliary floatation regulator is characterized in that: add auxiliary floatation regulator H in the described B operation 2SiF 6Amount be 2.5～4kg/t.
5. according to claim 1 with H 2SiF 6Low-grade phosphate ore method for floating as auxiliary floatation regulator is characterized in that: add in the described C operation and become owner of floatation regulator H 2SO 4Amount be 30 ~ 55L/t.
6. according to claim 1 or 5 described with H 2SiF 6Low-grade phosphate ore method for floating as auxiliary floatation regulator is characterized in that: add in the described C operation and become owner of floatation regulator H 2SO 4Concentration be 10%.
7. according to claim 1 with H 2SiF 6Low-grade phosphate ore method for floating as auxiliary floatation regulator is characterized in that: add the collecting agent of oxidized paraffin wax soap as the flotation operation in the described D operation.
8. according to claim 1 with H 2SiF 6Low-grade phosphate ore method for floating as auxiliary floatation regulator is characterized in that: the auxiliary floatation regulator H that adds in the described B operation 2SiF 6Be the H that contains that produces in the phosphoric acid extraction process 2SiF 6Waste liquid, H wherein 2SiF 6Concentration be 0.15～0.20kg/L.
9. according to claim 8 with H 2SiF 6Low-grade phosphate ore method for floating as auxiliary floatation regulator is characterized in that: the described H of containing 2SiF 6The addition of waste liquid is 15～25kg/t.
CN2011102976626A 2011-09-30 2011-09-30 Method for performing flotation on low-grade phosphate ores by taking H2SiF6 as auxiliary flotation regulator Pending CN102389863A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103567077A (en) * 2013-11-08 2014-02-12 昆明川金诺化工股份有限公司 Method for concentrating sulfur with fluorosilicic acid as activator of pyrite
CN104555962A (en) * 2015-01-05 2015-04-29 云南铜业胜威化工有限公司 Method for increasing defluorination rate of high-impurity concentrated phosphoric acid

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565625A (en) * 1984-09-14 1986-01-21 Tennessee Valley Authority Beneficiation of phosphate ores containing surface activated silica
CN1251539A (en) * 1997-03-28 2000-04-26 佛罗里达磷酸盐研究所 Method of benifiating siliceous phosphates
CN1330984A (en) * 2000-07-04 2002-01-16 武汉化工学院 Process for increasing anti-floatation effeciency of phosphate
CN1868598A (en) * 2005-05-27 2006-11-29 贵州宏福实业开发有限总公司 Modify used for floatation carbonat-containing fluorous ore
CN100542679C (en) * 2007-04-09 2009-09-23 云南省化工研究院 A kind of method of demagging from phosphate ore

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565625A (en) * 1984-09-14 1986-01-21 Tennessee Valley Authority Beneficiation of phosphate ores containing surface activated silica
CN1251539A (en) * 1997-03-28 2000-04-26 佛罗里达磷酸盐研究所 Method of benifiating siliceous phosphates
CN1330984A (en) * 2000-07-04 2002-01-16 武汉化工学院 Process for increasing anti-floatation effeciency of phosphate
CN1868598A (en) * 2005-05-27 2006-11-29 贵州宏福实业开发有限总公司 Modify used for floatation carbonat-containing fluorous ore
CN100542679C (en) * 2007-04-09 2009-09-23 云南省化工研究院 A kind of method of demagging from phosphate ore

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103567077A (en) * 2013-11-08 2014-02-12 昆明川金诺化工股份有限公司 Method for concentrating sulfur with fluorosilicic acid as activator of pyrite
CN104555962A (en) * 2015-01-05 2015-04-29 云南铜业胜威化工有限公司 Method for increasing defluorination rate of high-impurity concentrated phosphoric acid

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Application publication date: 20120328