CN102259897A - Continuous leaching process of nitratine - Google Patents
Continuous leaching process of nitratine Download PDFInfo
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- CN102259897A CN102259897A CN201010188122XA CN201010188122A CN102259897A CN 102259897 A CN102259897 A CN 102259897A CN 201010188122X A CN201010188122X A CN 201010188122XA CN 201010188122 A CN201010188122 A CN 201010188122A CN 102259897 A CN102259897 A CN 102259897A
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- leaching
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Abstract
The invention relates to a continuous leaching process of nitratine, which is characterized by comprising the steps of: (1) crushing ore; continuously delivering the crushed ore into a stirring groove; continuously adding water into the stirring groove; stirring; continuously delivering the stirred material into a multistage serial leaching groove; delivering the material stage by stage from the first stage to the next stage; delivering leaching water conversely from the final stage to the previous stage, wherein the leaching temperature of each stage is from 20 DEG C to 60 DEG C and the leaching time of each stage is from 0.5 to 8 hours; and (2) separating solid from liquid for the material obtained in (1) to obtain caldo solution with sodium nitrate, sodium sulfate and sodium chloride as main components, and gangue, wherein the caldo solution is used for the working procedures of preparing the sodium nitrate, the sodium sulfate and the sodium chloride by evaporation. The invention has the advantages that the recovery rate of sodium nitrate is high; the recovery rate is higher than that of known leaching method by more than 5% and higher than a large pool leaching method by more than 50%; leaching marinated finishing liquid contains 220 to 600g/l of NaNO3; tailings contain less than 0.5% of NaNO3; indoor continuous work can be performed; the continuous leaching process has strong raw material adaptability, continuous operation, low energy consumption, reduction of sodium nitrate cost and enhancement of economic requirement of producing sodium nitrate by leaching the nitratine.
Description
Technical field
The present invention relates to a kind of sodium nitre subsequent leaching technology, particularly a kind of with the dissolving of water subsequent leaching sodium nitre SODIUMNITRATE, sodium sulfate and sodium-chlor technology.
Background technology
Known sodium nitre (generally contains NaNO
34-7%) the method for dissolving SODIUMNITRATE, sodium sulfate and sodium-chlor has dump leaching method and Da Chi leaching method, contains NaNO but wherein dump leaching method exists leaching bittern to finish liquid
3Be lower than below the 100g/l, the fresh water damage (FWD) amount reaches, and open-air batch operation, tailings contain NaNO
30.7%, and wherein Da Chi leaching method exists leaching bittern to finish liquid to contain NaNO
3Be lower than below the 220g/l, open-air batch operation, tailings contain NaNO
3Up to the low problem of the 2% raw ore rate of recovery, therefore, above-mentioned two methods are difficult to adapt to the economy requirement of preparing sodium nitrate with soda niter.
Summary of the invention
The purpose of this invention is to provide a kind of sodium nitre subsequent leaching technology, this technology can indoorly be worked continuously, tailings contains NaNO
3Be lower than 0.5%, improve the raw ore rate of recovery, reduce the SODIUMNITRATE cost, improve the economy requirement of sodium nitre leaching production SODIUMNITRATE.
For reaching the purpose of foregoing invention, the present invention by the following technical solutions:
This sodium nitre subsequent leaching technology, it is characterized in that: it comprises:
(1) with ore reduction, rubble is sent into steel basin continuously, adding water in the steel basin continuously stirs, the material that stirs is sent into continuously the leaching groove of multi-stage serial connection, material from the first step to next stage feeding step by step; soak the Stains water and send water toward previous stage from last step is reverse, leaching temperature 20-60 at different levels ℃, leaching time 0.5-8 at different levels hours;
(2) material that (1) is obtained carries out solid-liquid separation, and obtaining SODIUMNITRATE, sodium sulfate and sodium-chlor is the nitre halogen solution and the mine tailing of main component, and nitre halogen solution is for evaporation system SODIUMNITRATE, sodium sulfate and sodium-chlor operation;
Described nitre halogen solution component is NaNO
3220-600g/l, NaCl 300-30g/l, Na
2SO
410-150g/l; Tailings contains NaNO
3Be lower than 0.5%.
The sodium nitre component is NaNO
34-14%, NaCl 15-25%, Na
2SO
44-7%.
The ore that this technology also is fit to has NaNO
3, NaCl system or NaNO
3, Na
2SO
4System.
Advantage of the present invention is:
Change existing technology from sodium nitre leaching dissolving SODIUMNITRATE, sodium sulfate and sodium-chlor, an economy requirement that can adapt to preparing sodium nitrate with soda niter is proposed, the theoretical rate of recovery height of SODIUMNITRATE, more known dump leaching method is high more than 5%, Da Chi leaching method is high more than 50%, and leaching bittern is finished liquid nitre halogen solution and contained NaNO
3Be 220-600g/l, tailings contains NaNO
3Be lower than 0.5%, can indoorly work continuously, adaptability to raw material is strong, operation continuously, energy consumption is low, reduce the SODIUMNITRATE cost, improves the economy requirement of sodium nitre leaching production SODIUMNITRATE.
Description of drawings
Fig. 1 is the FB(flow block) of technology of the present invention
1 is conveying belt, and 2 is hopper, and 3 is chute, and 4-1,4-2,4-3,4-n are leaching equipment at different levels (market is on sale), and wherein n represents final stage, and 5-1,5-2,5-3 are pump, and 8 is water pump, and 7 is condensate draining, and 6 is heat exchanger.The one-level tailings advances secondary, and the secondary tailings advances three grades, and by that analogy, nitre halogen solution one-level from behind send toward previous stage, promptly drives in the wrong direction.
Embodiment
Embodiment 1: get sodium nitre and (contain NaNO
36%) 100 ton, 30.87 tons of waters carry out three stage countercurrent subsequent leachings to sodium nitre, 50 ℃ of leaching temperatures, leaching times at different levels 0.5 hour, 31.10 tons of the nitre halogen solution and the mine tailing that obtain SODIUMNITRATE, sodium sulfate and sodium-chlor main component after the solid-liquid separation (wherein contain NaNO for 99.77 tons
30.5%, moisture 15%), nitre halogen solution component (NaNO
3233g/l, NaCl 213g/l, Na
2SO
4115g/l), nitre halogen solution is for evaporation system SODIUMNITRATE, sodium sulfate and sodium-chlor operation; Tailings backfill mine worked-out section.
Embodiment 2: get sodium nitre and (contain NaNO
35%) 100 ton, 27.22 tons of waters carry out the four-stage counter-current subsequent leaching to sodium nitre, 50 ℃ of leaching temperatures, leaching times at different levels 0.5 hour, 24.23 tons of the nitre halogen solution and the mine tailing that obtain SODIUMNITRATE, sodium sulfate and sodium-chlor main component after the solid-liquid separation (wherein contain NaNO for 102.99 tons
30.5%, moisture 15%), nitre halogen solution component (NaNO
3260g/l, NaCl 205g/l, Na
2SO
4106g/l), nitre halogen solution is for evaporation system SODIUMNITRATE, sodium sulfate and sodium-chlor operation; Tailings backfill mine worked-out section.
Embodiment 3: get sodium nitre and (contain NaNO
34%) 100 ton, 24.77 tons of waters carry out six stage countercurrent subsequent leachings to sodium nitre, 50 ℃ of leaching temperatures, leaching times at different levels 0.5 hour, 11.13 tons of the nitre halogen solution and the mine tailing that obtain SODIUMNITRATE, sodium sulfate and sodium-chlor main component after the solid-liquid separation (wherein contain NaNO for 113.64 tons
30.5%, moisture 15%), nitre halogen solution component (NaNO
3319g/l, NaCl 195g/l, Na
2SO
485g/l), nitre halogen solution is for evaporation system SODIUMNITRATE, sodium sulfate and sodium-chlor operation; Tailings backfill mine worked-out section.
Claims (4)
1. sodium nitre subsequent leaching technology, it is characterized in that: it comprises:
(1) with ore reduction, rubble is sent into steel basin continuously, adding water in the steel basin continuously stirs, the material that stirs is sent into continuously the leaching groove of multi-stage serial connection, material from the first step to next stage feeding step by step; soak the Stains water and send water toward previous stage from last step is reverse, leaching temperature 20-60 at different levels ℃, leaching time 0.5-8 at different levels hours;
(2) material that (1) is obtained carries out solid-liquid separation, and obtaining SODIUMNITRATE, sodium sulfate and sodium-chlor is the nitre halogen solution and the mine tailing of main component, and nitre halogen solution is for evaporation system SODIUMNITRATE, sodium sulfate and sodium-chlor operation.
2. a kind of sodium nitre subsequent leaching technology according to claim 1 is characterized in that: nitre halogen solution component is NaNO
3220-600g/l, NaCl 300-30g/l, Na
2SO
410-150g/l; Tailings contains NaNO
3Be lower than 0.5%.
3. a kind of sodium nitre subsequent leaching technology according to claim 1 and 2 is characterized in that: sodium nitre component NaNO
34-14%, NaCl 15-25%, Na
2SO
44-7%.
4. a kind of sodium nitre subsequent leaching technology according to claim 1 is characterized in that: ores NaNO as an alternative
3, NaCl system or NaNO
3, Na
2SO
4System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010188122XA CN102259897A (en) | 2010-05-31 | 2010-05-31 | Continuous leaching process of nitratine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010188122XA CN102259897A (en) | 2010-05-31 | 2010-05-31 | Continuous leaching process of nitratine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102259897A true CN102259897A (en) | 2011-11-30 |
Family
ID=45006772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010188122XA Pending CN102259897A (en) | 2010-05-31 | 2010-05-31 | Continuous leaching process of nitratine |
Country Status (1)
| Country | Link |
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| CN (1) | CN102259897A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102557083A (en) * | 2012-01-05 | 2012-07-11 | 中国中轻国际工程有限公司 | Process for countercurrent leaching in leaching chamber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU715470A1 (en) * | 1978-03-07 | 1980-02-15 | Предприятие П/Я А-3732 | Method of separate preparation of sodium and potassium nitrates |
| CN101070168A (en) * | 2007-06-26 | 2007-11-14 | 中国中轻国际工程有限公司 | Method for producing sodium nitrate |
| CN101168444A (en) * | 2006-10-23 | 2008-04-30 | 新疆硝石钾肥有限公司 | Technique for producing sodium nitrate by chilisaltpeter adverse current circulation leaching |
| CN101182013A (en) * | 2007-11-16 | 2008-05-21 | 新疆硝石钾肥有限公司 | Method for producing sodium nitrate by chilisaltpeter ore |
| CN101343072A (en) * | 2008-08-20 | 2009-01-14 | 中蓝连海设计研究院 | Method for preparing sodium nitrate with soda niter |
-
2010
- 2010-05-31 CN CN201010188122XA patent/CN102259897A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU715470A1 (en) * | 1978-03-07 | 1980-02-15 | Предприятие П/Я А-3732 | Method of separate preparation of sodium and potassium nitrates |
| CN101168444A (en) * | 2006-10-23 | 2008-04-30 | 新疆硝石钾肥有限公司 | Technique for producing sodium nitrate by chilisaltpeter adverse current circulation leaching |
| CN101070168A (en) * | 2007-06-26 | 2007-11-14 | 中国中轻国际工程有限公司 | Method for producing sodium nitrate |
| CN101182013A (en) * | 2007-11-16 | 2008-05-21 | 新疆硝石钾肥有限公司 | Method for producing sodium nitrate by chilisaltpeter ore |
| CN101343072A (en) * | 2008-08-20 | 2009-01-14 | 中蓝连海设计研究院 | Method for preparing sodium nitrate with soda niter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102557083A (en) * | 2012-01-05 | 2012-07-11 | 中国中轻国际工程有限公司 | Process for countercurrent leaching in leaching chamber |
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Application publication date: 20111130 |