CN115558802A - Method for removing peculiar smell and resisting hardening in titanium concentrate drying process - Google Patents
Method for removing peculiar smell and resisting hardening in titanium concentrate drying process Download PDFInfo
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- CN115558802A CN115558802A CN202211298154.4A CN202211298154A CN115558802A CN 115558802 A CN115558802 A CN 115558802A CN 202211298154 A CN202211298154 A CN 202211298154A CN 115558802 A CN115558802 A CN 115558802A
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- drying
- washing
- titanium concentrate
- hardening
- alcohol
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- 238000001035 drying Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 28
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 23
- 239000010936 titanium Substances 0.000 title claims abstract description 23
- 239000012141 concentrate Substances 0.000 title claims abstract description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000005406 washing Methods 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000007864 aqueous solution Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000002244 precipitate Substances 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 239000006228 supernatant Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 10
- 239000008396 flotation agent Substances 0.000 claims description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 4
- 238000007605 air drying Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 3
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 2
- 238000005188 flotation Methods 0.000 abstract description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 7
- 239000003546 flue gas Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 4
- 239000011707 mineral Substances 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 231100000331 toxic Toxicity 0.000 abstract description 2
- 230000002588 toxic effect Effects 0.000 abstract description 2
- 239000002085 irritant Substances 0.000 description 9
- 231100000021 irritant Toxicity 0.000 description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1204—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent
- C22B34/1213—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent by wet processes, e.g. using leaching methods or flotation techniques
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to the technical field of mineral drying, and particularly relates to a method for removing peculiar smell and resisting hardening in a titanium concentrate drying process. The method comprises the following steps: (1) Washing the wet powder of the flotation titanium concentrate by using an alcohol aqueous solution, and mechanically stirring for 5-10min; (2) And standing for 5-10min after washing for solid-liquid separation, circularly washing the supernatant, and drying the lower-layer precipitate in a rotary kiln. The method is simple to operate, can reduce energy consumption and equipment corrosion, improves the productivity, does not cause production reduction or production stop due to hardening or wall sticking of materials of the rotary kiln, avoids toxic and harmful flue gas, and ensures the health of operators and optimization of human living environment.
Description
Technical Field
The invention belongs to the technical field of mineral drying, and particularly relates to a method for removing peculiar smell and resisting hardening in a titanium concentrate drying process.
Background
Mineral drying is a necessary process for blast furnace and electric furnace smelting, otherwise, the stable and smooth operation of the furnace condition can be influenced, the smelting cost is increased, and even accidents are caused. Because reagents such as xanthate, collecting agent and foaming agent with low boiling point are used in the flotation process of the flotation mineral, the flotation reagents are volatilized or decomposed if the temperature is too high in the drying process, irritant or odor smoke is generated, the environment is polluted greatly, and the life of people is also seriously influenced. For example, irritant flue gas containing sulfur and the like is easily generated by high-temperature drying (e.g., about 800 ℃) (chinese patent 201110389320.7), and partial irritant flue gas can be eliminated by adding additional process steps such as high-temperature catalytic cracking and oxidative decomposition process (chinese patent 201910239550.1), but the process is not suitable for a classic rotary kiln drying process, and still generates a large amount of irritant flue gas, and if an environment-friendly low-temperature (indirect) drying technology is adopted, although the irritant flue gas is reduced, materials are easily hardened, and the production efficiency is seriously affected. On the other hand, the current method for eliminating the ring formation, the mass wall adhesion or the material hardening of the rotary kiln needs to introduce additional mechanical equipment (such as Chinese patents 200410037079.1, 202010701224.0, ZL202110946282.4, 202111136674.0) or a purging device (such as Chinese patents 202111134616.4, 202111135109.2 and 202111136753.1), but the problems of the material hardening and the irritant smoke of the flotation titanium concentrate are not solved at the same time.
Disclosure of Invention
In order to overcome the defects of low drying efficiency, harmful smoke generated by volatilization and decomposition of a sulfur and nitrogen-containing flotation agent and the like caused by caking of the existing rotary kiln plate, the invention provides a method for removing peculiar smell and resisting hardening in the drying process of titanium concentrate, which not only greatly improves the drying efficiency of the titanium concentrate, but also avoids the decomposition or volatilization of the flotation agent caused by overhigh temperature in the drying process from the source, avoids the generation of pungent odor caused by the discharge of smoke after drying, and avoids environmental pollution and the influence of surrounding living life.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a method for removing peculiar smell and resisting hardening in a titanium concentrate drying process comprises the following steps:
(1) Washing the wet powder of the titanium concentrate by adopting an alcohol aqueous solution, and mechanically stirring for 5-10min;
(2) And standing for 5-10min after washing for solid-liquid separation, circularly washing the supernatant, and drying the lower-layer precipitate in a rotary kiln.
In the above technical solution, further, the washing is rinsing or immersion washing.
In the above technical solution, further, the alcohol is one or a mixture of ethanol, propanol, ethylene glycol and glycerol.
In the above technical solution, further, the alcohol aqueous solution is 50-70% by mass of an ethanol aqueous solution.
In the above technical scheme, further, the liquid-solid volume ratio of the alcohol aqueous solution to the wet powder of the titanium concentrate for flotation is (2-10): 1.
in the above technical solution, further, the method further includes pre-drying, and the pre-drying method includes: filtering the lower layer precipitate after solid-liquid separation, and naturally air drying at room temperature for 6-24h.
In the technical scheme, the alcohol solution which is circularly washed and is enriched with the flotation agent is evaporated to recover the alcohol and the flotation agent.
The invention has the beneficial effects that:
1. the method disclosed by the invention is simple to operate, can reduce energy consumption and equipment corrosion, improve the productivity, avoid production reduction or production halt caused by hardening or wall adhesion of the rotary kiln, avoid the generation of toxic and harmful flue gas and ensure the health of operators and optimization of human living environment.
2. The method can eliminate sulfur-containing and nitrogen-containing irritant flue gas generated by residual flotation agents in the titanium concentrate drying process, and simultaneously avoids the problem of low drying caused by hardening due to high water content in the rotary kiln furnace charge drying process.
3. In the method, the selection and the proportion of the washing solution are based on the principle of similarity and intermiscibility and the principle of economy and harmlessness, the reduction of the water content of the material and the impurity amount of the flotation agent in the drying process improves the evaporation kinetics, and the hardening or adhesion of the material is avoided or reduced.
Drawings
FIG. 1 is a schematic process flow diagram of example 1 of the present invention;
FIG. 2 is a schematic process flow diagram of example 2 of the present invention.
Fig. 3 is a photograph of the macro morphology of the flotation titanium concentrate wet powder, the drying ore and the dried ore obtained in examples 1 and 2, wherein a is the flotation titanium concentrate wet powder, b is the drying ore, c is example 1, and d is example 2.
Detailed Description
The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the invention in any way.
Example 1
Leaching and floating titanium concentrate wet powder (in a bonding state) by using an ethanol aqueous solution with the ethanol mass percent of 70%, wherein the volume ratio of the ethanol aqueous solution to the titanium concentrate wet powder is 2; standing for precipitation for 5min for solid-liquid separation, circularly leaching supernatant, filtering lower layer precipitate, naturally air drying at room temperature overnight, and drying in rotary kiln to obtain solid powder.
The dried titanium concentrate is in a quicksand shape, as shown in fig. 3 (c), plate caking does not occur in the drying process of the rotary kiln, direct smell and pungent smell are generated, and the sulfur content in component detection is reduced by more than 90%.
Example 2
Adding an ethanol aqueous solution with the ethanol mass percent of 50% into the flotation titanium concentrate wet powder (in a bonding state), performing immersion washing, wherein the volume ratio of the ethanol aqueous solution to the flotation titanium concentrate wet powder is 3; standing for precipitation for 10min for solid-liquid separation, circularly washing the supernatant, and drying the lower precipitate in a rotary kiln to obtain solid powder.
The dried fine titanium ore is in a quicksand shape, as shown in fig. 3 (d), plate caking and irritant smoke are not generated in the drying process of the rotary kiln, the smell sense is intuitive, no irritant odor is generated, and the sulfur content in component detection is reduced by more than 90%.
The above examples are merely preferred embodiments of the present invention, and are not intended to limit the embodiments. The protection scope of the present invention shall be subject to the scope defined by the claims. Other variations and modifications may be made on the basis of the above description. Obvious variations or modifications of this invention are within the scope of the invention.
Claims (7)
1. A method for removing peculiar smell and resisting hardening in a titanium concentrate drying process is characterized by comprising the following steps: the method comprises the following steps:
(1) Washing the wet powder of the titanium concentrate by adopting an alcohol aqueous solution, and mechanically stirring for 5-10min;
(2) And standing for 5-10min after washing for solid-liquid separation, circularly washing the supernatant, and drying the lower-layer precipitate in a rotary kiln.
2. The method of claim 1, wherein the washing is rinsing or leaching.
3. The method according to claim 1, wherein the alcohol is one or more of ethanol, propanol, ethylene glycol and glycerol.
4. The method of claim 1, wherein the aqueous alcohol solution is 50-70% by weight of an aqueous ethanol solution.
5. The method of claim 1, wherein the liquid-solid volume ratio of the aqueous alcohol solution to the wet titanium concentrate powder is (2-10): 1.
6. the method of claim 1, further comprising pre-drying by: filtering the lower precipitate after solid-liquid separation, and naturally air drying at room temperature for 6-24h.
7. The method of claim 1, wherein the alcohol solution enriched in flotation agent after the recycle wash is evaporated to recover the alcohol and flotation agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211298154.4A CN115558802A (en) | 2022-10-21 | 2022-10-21 | Method for removing peculiar smell and resisting hardening in titanium concentrate drying process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211298154.4A CN115558802A (en) | 2022-10-21 | 2022-10-21 | Method for removing peculiar smell and resisting hardening in titanium concentrate drying process |
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| Publication Number | Publication Date |
|---|---|
| CN115558802A true CN115558802A (en) | 2023-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211298154.4A Pending CN115558802A (en) | 2022-10-21 | 2022-10-21 | Method for removing peculiar smell and resisting hardening in titanium concentrate drying process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115558802A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4335143A (en) * | 1980-09-30 | 1982-06-15 | General Foods Corporation | Dried albedo clouding agent and process therefor |
| CN1526474A (en) * | 2003-09-22 | 2004-09-08 | 南京工业大学 | Method for synthesizing titanium oxide with high specific surface area |
| RU2367605C1 (en) * | 2008-03-31 | 2009-09-20 | Институт химии и технологии редких элементов и минерального сырья им. И.В. Тананаева Кольского научного центра Российской академии наук | Method for processing of titanium-containing concentrate |
| CN102564835A (en) * | 2012-01-09 | 2012-07-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Sample preparation method and detecting method for detecting impurities in titanyl sulfate solution |
| CN104650806A (en) * | 2013-11-19 | 2015-05-27 | 昆明德道科技有限公司 | Titanium concentrate grinding aid |
| CN105585045A (en) * | 2014-10-21 | 2016-05-18 | 沈炳炜 | Method for preparing titanyl sulfate |
| CN106435169A (en) * | 2016-12-21 | 2017-02-22 | 安徽中创电子信息材料有限公司 | Method for preparing titanium concentrate pelletizing material |
| CN111690824A (en) * | 2019-03-14 | 2020-09-22 | 边悟 | Titanium-tungsten-containing raw material acidolysis titanium extraction and method for acidolysis titanium extraction of titanium-containing raw material |
-
2022
- 2022-10-21 CN CN202211298154.4A patent/CN115558802A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4335143A (en) * | 1980-09-30 | 1982-06-15 | General Foods Corporation | Dried albedo clouding agent and process therefor |
| CN1526474A (en) * | 2003-09-22 | 2004-09-08 | 南京工业大学 | Method for synthesizing titanium oxide with high specific surface area |
| RU2367605C1 (en) * | 2008-03-31 | 2009-09-20 | Институт химии и технологии редких элементов и минерального сырья им. И.В. Тананаева Кольского научного центра Российской академии наук | Method for processing of titanium-containing concentrate |
| CN102564835A (en) * | 2012-01-09 | 2012-07-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Sample preparation method and detecting method for detecting impurities in titanyl sulfate solution |
| CN104650806A (en) * | 2013-11-19 | 2015-05-27 | 昆明德道科技有限公司 | Titanium concentrate grinding aid |
| CN105585045A (en) * | 2014-10-21 | 2016-05-18 | 沈炳炜 | Method for preparing titanyl sulfate |
| CN106435169A (en) * | 2016-12-21 | 2017-02-22 | 安徽中创电子信息材料有限公司 | Method for preparing titanium concentrate pelletizing material |
| CN111690824A (en) * | 2019-03-14 | 2020-09-22 | 边悟 | Titanium-tungsten-containing raw material acidolysis titanium extraction and method for acidolysis titanium extraction of titanium-containing raw material |
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Application publication date: 20230103 |