CN102505071B - Glass fiber reinforced plastic centrifugal extractor and method for implementing extraction transformation of metal compounds - Google Patents

Glass fiber reinforced plastic centrifugal extractor and method for implementing extraction transformation of metal compounds Download PDF

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Publication number
CN102505071B
CN102505071B CN201110452686.4A CN201110452686A CN102505071B CN 102505071 B CN102505071 B CN 102505071B CN 201110452686 A CN201110452686 A CN 201110452686A CN 102505071 B CN102505071 B CN 102505071B
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extraction
extraction section
centrifugal extractor
organic phase
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CN102505071A (en
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杨明德
党杰
刘吉
陈镇
吴玉龙
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Tsinghua University
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Tsinghua University
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
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Abstract

The invention discloses a glass fiber reinforced plastic centrifugal extractor and a method for implementing extraction transformation of metal compounds, falling into the technical field of metallurgy. The glass fiber reinforced plastic centrifugal extractor is adopted in extraction transformation of metal compounds, which can increase service efficiency of extracting agents, increase productivity of equipment and facilitate separation of impurities during washing process. By virtue of the heat generated during the saponifying process, the temperature of the organic phase is increased and the viscosity is reduced. The centrifugal extractor achieves the phase splitting effect by a centrifugal force, and can be applied to highly-viscous organic phases under the same process conditions. The retention volume of materials in the centrifugal extractor is reduced, and the temperature of the organic phase can be increased under high-speed stirring conditions.

Description

A kind of method of glass fiber reinforced plastic centrifugal extractor and implementing extraction transformation of metal compounds
Technical field
The invention belongs to metallurgical technology field, be specifically related to a kind of method of glass fiber reinforced plastic centrifugal extractor and implementing extraction transformation of metal compounds.
Background technology
The method of metallic compound transition has that multiple the precipitation method are one of conventional methods as the precipitation method, ion-exchange, extraction etc., and operating process comprises precipitation, filtration, washing, dissolving etc., and advantage is that process equipment is simple, easy to operate; Shortcoming is that wastewater discharge is large, labour intensity large, metal yield is low, is difficult for realizing automation.The major defect of ion-exchange is that ion exchange bed valve is numerous, and complicated operation is loaded down with trivial details.Automation mechanized operation difficulty is large, invests high.It is little that extraction has wastewater discharge, and technical process is easy to automation continuously, and metal yield is high, and removal of impurities degree of depth high, is widely adopted in actual applications.
Annulus type centrifugal extractor is a kind of efficient extraction equipment, its operation principle: extraction two-phase enters the annular space space between shell and rotary drum, because rotary drum high speed rotating has produced strong Taylor (Taylor) eddy current in annular space space, two-phase is fully mixed, mixed process is followed two alternate mass transfers simultaneously, mixed liquor, under the effect of outer casing bottom guide vane, enters at a high speed rotary drum by bottom.There is the difference in density in immiscible two-phase in rotary drum, and under the effect of centrifugal force, two are separated, and get rid of to different collecting rings by passage separately.Annulus type centrifugal extractor is horizontal series directly, and without additional interstage pumps, inter-stage is reinforced and feeding is very flexible.Aspect extraction application, have following features: unit dischargeable capacity production capacity is large, two-phase is short time of contact, dynamically corresponding fast, easily is automated control, and operations flows is than the large strong adaptability of scope, and stage efficiency is high.
Summary of the invention
The object of the present invention is to provide a kind of glass fiber reinforced plastic centrifugal extractor, solve organic phase load and improve rear its viscosity increase, mobility variation, in general extraction equipment, be difficult to the problem of operation.
The present invention also aims to provide a kind of method with high capacity organic phase implementing extraction transformation of metal compounds.
A kind of glass fiber reinforced plastic centrifugal extractor, rotary drum 2 is placed in shell 1, rotary drum 2 bottoms are connected with mixing guide plate 3, mix guide plate 3 bottoms and be provided with floss hole 4, one side of shell 1 is provided with liquor inlet pipe 5, opposite side is provided with heavy out pipe 6, rotary drum 2 middle and upper parts are provided with light phase liquid and throw away pipe 7, rotary drum 2 tops are provided with heavy-phase liquid and throw away mouth 8, rotary drum 2 is connected with motor 10 by main shaft 9, one end near rotary drum 2 on main shaft 9 is provided with labyrinth fixture 11 and labyrinth moving part 12, rotary drum 2 and main shaft 9 junctions are provided with shaft coupling 13 and shaft coupling flexible piece 14, motor 10 lower ends are connected with motor location seat 15, seat 10 lower ends, motor location are connected with main engine foundation 16.
Described shell 1, rotary drum 2, mixing guide plate 3, labyrinth fixture 11 and labyrinth moving part 12 materials are fiberglass.
Described fiberglass is epoxy resin, bisphenol-A unsaturated polyester resin, vinyl ester resin or phenol formaldehyde epoxy vinyl ester resin.
By a method for high capacity organic phase implementing extraction transformation of metal compounds, carry out in accordance with the following steps:
(1) to extraction section, pour metallic compound feed liquid, to washing section, pour cleaning solution, to stripping section, pour after strip liquor, start each section of centrifugal extractor;
(2) add extractant and saponification liquor to carry out saponification simultaneously;
(3) after saponification, extractant enters respectively and mends extraction section and extraction section;
(4) extraction section flow equilibrium back loading organic phase enters washing section, and extraction section starts charging;
(5) after extraction section flow equilibrium, raffinate enters and mends extraction section, and raffinate flows out to be mended after extraction section, mends extraction extractant and starts charging;
(5) washing section flow equilibrium back loading organic phase enters stripping section, and washing section starts charging;
(6) after stripping section flow equilibrium, start to add strip liquor;
(7) total system reaches after balance, stable operation.
Described metallic compound feed liquid is chloride, sulfate or nitrate.
Described extractant is di-2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester, two (2-ethylhexyl phosphoric acid), two (2,4,4-tri-methyl-amyl) phosphinic acids or 2-hydroxyl-5-nonyl salicyl aldooximes.
Beneficial effect of the present invention: adopt glass fiber reinforced plastic centrifugal extractor of the present invention to carry out the service efficiency that implementing extraction transformation of metal compounds can improve extractant, improve the productivity ratio of equipment, the impurity being conducive in washing process is separated; The heat of utilizing saponification process to produce, organic phase temperature is raise, reduced viscosity, centrifugal extractor is to adopt centrifugal force phase-splitting, under same process conditions, can adapt to more full-bodied organic phase, material lagging amount in centrifugal extractor is little on the other hand, and under the condition of stirring at a high speed, the temperature of organic phase also can raise.
Accompanying drawing explanation
Fig. 1 is abstraction and type-reverting process principle figure.
Fig. 2 is glass fiber reinforced plastic centrifugal extractor structure chart of the present invention;
In figure, 1-shell, 2-rotary drum, 3-mixing guide plate, 4-floss hole, 5-liquor inlet pipe, 6-heavy out pipe, the light phase liquid of 7-throw away pipe, 8-heavy-phase liquid throws away mouth, 9-main shaft, 10-motor, 11-labyrinth fixture, 12-labyrinth moving part, 13-shaft coupling, 14-shaft coupling flexible piece, 15-motor location seat, 16-main engine foundation.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Embodiment 1
A kind of glass fiber reinforced plastic centrifugal extractor, as shown in Figure 2, rotary drum 2 is placed in shell 1, rotary drum 2 bottoms are connected with mixing guide plate 3, mix guide plate 3 bottoms and be provided with floss hole 4, one side of shell 1 is provided with liquor inlet pipe 5, opposite side is provided with heavy out pipe 6, rotary drum 2 middle and upper parts are provided with light phase liquid and throw away pipe 7, rotary drum 2 tops are provided with heavy-phase liquid and throw away mouth 8, rotary drum 2 is connected with motor 10 by main shaft 9, one end near rotary drum 2 on main shaft 9 is provided with labyrinth fixture 11 and labyrinth moving part 12, rotary drum 2 and main shaft 9 junctions are provided with shaft coupling 13 and shaft coupling flexible piece 14, motor 10 lower ends are connected with motor location seat 15, seat 10 lower ends, motor location are connected with main engine foundation 16.
Adopt said apparatus to carry out cobalt chloride solution cobalt nitrate solution (flow process is as shown in Figure 1) transition, concrete operation step is as follows:
(1) to extraction section, pour metallic compound feed liquid, to washing section, pour cleaning solution, to stripping section, pour after strip liquor, start each section of centrifugal extractor;
(2) add extractant and saponification liquor to carry out saponification simultaneously;
(3) after saponification, extractant enters respectively and mends extraction section and extraction section;
(4) extraction section flow equilibrium back loading organic phase enters washing section, and extraction section starts charging;
(5) after extraction section flow equilibrium, raffinate enters and mends extraction section, and raffinate flows out to be mended after extraction section, mends extraction extractant and starts charging;
(5) washing section flow equilibrium back loading organic phase enters stripping section, and washing section starts charging;
(6) after stripping section flow equilibrium, start to add strip liquor;
(7) total system reaches after balance, stable operation.
The present embodiment metallic compound feed liquid is cobalt chloride solution, and in solution, middle cobalt concentration is 40~80g/L; Extractant is di-2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester (P507), concentration 40~60%; Cleaning solution: 0.2~0.4N HNO 3; Strip liquor: 3~6N HNO 3; Organic phase 10%NaOH saponification, mending extraction section saponification rate is 10~30%, extraction section saponification rate is 60~80%.Supplementary extraction section is compared (O/A): 1/5, and extraction section is compared: 2/1, washing section is compared: 5/1, stripping section is compared: 2/1~5/1.Maximum total flux: 5m 3/ hr.Cobalt nitrate solution is containing cobalt 70~100g/L, containing Cl-< 10ppm, and raffinate is containing cobalt 0.1 < g/L.

Claims (1)

1. by a method for high capacity organic phase implementing extraction transformation of metal compounds, it is characterized in that, the concrete operation step of cobalt chloride solution cobalt nitrate solution transition is as follows:
(1) to extraction section, pour cobalt chloride solution, to washing section, pour cleaning solution, to stripping section, pour after strip liquor, start each section of centrifugal extractor;
(2) add extractant and saponification liquor to carry out saponification simultaneously;
(3) after saponification, extractant enters respectively and mends extraction section and extraction section;
(4) extraction section flow equilibrium back loading organic phase enters washing section, and extraction section starts charging;
(5) after extraction section flow equilibrium, raffinate enters and mends extraction section, and raffinate flows out to be mended after extraction section, mends extraction extractant and starts charging;
(5) washing section flow equilibrium back loading organic phase enters stripping section, and washing section starts charging;
(6) after stripping section flow equilibrium, start to add strip liquor;
(7) total system reaches after balance, stable operation;
In above-mentioned cobalt chloride solution, cobalt concentration is 40~80g/L; Extractant is 2-ethylhexyl phosphonic acids single 2-ethyl base ester (P507), concentration 40~60%; Cleaning solution: 0.2~0.4N HNO 3; Strip liquor: 3~6N HNO 3; Organic phase 10%NaOH saponification, mending extraction section saponification rate is 10~30%, extraction section saponification rate is 60~80%; Supplementary extraction section is compared (O/A): 1/5, and extraction section is compared: 2/1, washing section is compared: 5/1, stripping section is compared: 2/1~5/1; Maximum total flux: 5m 3/ hr; Cobalt nitrate solution is containing cobalt 70~100g/L, containing Cl -<10ppm, raffinate is containing cobalt 0.1<g/L.
CN201110452686.4A 2011-12-29 2011-12-29 Glass fiber reinforced plastic centrifugal extractor and method for implementing extraction transformation of metal compounds Active CN102505071B (en)

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CN105331809B (en) * 2015-09-30 2017-08-25 兰州金川新材料科技股份有限公司 A kind of application of annulus type centrifugal extractor in cobalt chloride extraction
CN110060744B (en) * 2018-11-16 2023-05-02 兰州大学 Comprehensive calculation and simulation method for relationship between technological parameters and single-stage extraction performance of annular gap type centrifugal extractor
CN113845148B (en) * 2021-08-11 2023-06-06 合肥通用机械研究院有限公司 Centrifugal extraction system for preparing manganese sulfate

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CN85100148B (en) * 1985-04-01 1987-08-26 清华大学 Extraction for producing fluorescene grade lanthanum oxide
CN2097677U (en) * 1991-09-05 1992-03-04 清华大学 Three-section rotating bowl centrifugal extractor
CN1455009A (en) * 2003-05-17 2003-11-12 包头稀土研究院 Preparation of rare earth chloride from long-chain fatty acid extracting transformation and back-extraction process thereof
CN100427400C (en) * 2006-10-09 2008-10-22 江阴加华新材料资源有限公司 Prepn process of high purity yttrium europium oxide
CN201334446Y (en) * 2008-06-03 2009-10-28 南京师范大学 Device for extracting solanesol by combining saponification, extraction and low-temperature crystallize centrifugation
CN101298410A (en) * 2008-06-20 2008-11-05 南京师范大学 Method for extracting solanesol by centrifugal combination of saponification, extraction and low temperature crystallization and equipment thereof
CN101967557B (en) * 2010-07-20 2012-09-26 包头市京瑞新材料有限公司 Method for recycling carbonate rare-earth deposited wastewater to extraction and separation process for washing organic substances and preparing re-extraction solution and lotion
CN201949682U (en) * 2010-12-04 2011-08-31 金川集团有限公司 Centrifugal extractor

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