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Found results for
 patents
1.
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Method for producing calcium zincate
| Application Number |
17146475 |
| Grant Number |
11247913 |
| Status |
In Force |
| Filing Date |
2021-01-11 |
| First Publication Date |
2021-05-06 |
| Grant Date |
2022-02-15 |
| Owner |
CHONGQING DONGQUN TECHNOLOGY CO., LTD. (China)
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| Inventor |
- Yue, Huiwei
- Li, Shichuan
- Long, Zhongxiang
- Jiang, Tao
- Liu, Quanfeng
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Abstract
3; optionally, purifying the extract; a decarburization step: adding calcium oxide and/or calcium hydroxide to the extract, stirring, and filtering to obtain a first solid and a first filtrate; a calcium zincate synthesis step: adding calcium hydroxide and/or calcium oxide to the first filtrate, stirring to react, and filtering to obtain a second solid and a second filtrate; optionally, rinsing the second solid with water; a drying step: drying the second solid to obtain the final calcium zincate product.
IPC Classes ?
- C01G 9/00 - Compounds of zinc
- C22B 3/14 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions containing ammonia or ammonium salts
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2.
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METHOD FOR PRODUCING ZINC OXIDE BY MEANS OF DOUBLE LEACHING
| Application Number |
CN2019088490 |
| Publication Number |
2020/019854 |
| Status |
In Force |
| Filing Date |
2019-05-27 |
| Publication Date |
2020-01-30 |
| Owner |
CHONGQING DONGQUN TECHNOLOGY CO., LTD. (China)
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| Inventor |
- Yue, Huiwei
- Li, Shichuan
- Long, Zhongxiang
- Jiang, Tao
- Liu, Quanfeng
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Abstract
A method for producing zinc oxide by means of double leaching, comprising a primary leaching step, an optional purification step, a first precipitation step, a second precipitation step, a primary calcination step, a secondary leaching step, a crystallization step under increased pressure, a decomposition step under reduced pressure, an optional rinsing step, and a secondary calcination step.
IPC Classes ?
- C22B 3/14 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions containing ammonia or ammonium salts
- C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
- C22B 19/20 - Obtaining zinc otherwise than by distilling
- C22B 19/34 - Obtaining zinc oxide
- C01G 9/02 - OxidesHydroxides
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3.
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METHOD FOR PRODUCING ZINC-CONTAINING COMPLEX OR ZINC OXIDE USING ZINC-CONTAINING RAW ORE VIA INTERMEDIATE STEP FOR SYNTHESIS OF CALCIUM ZINCATE
| Application Number |
CN2019084003 |
| Publication Number |
2020/019777 |
| Status |
In Force |
| Filing Date |
2019-04-24 |
| Publication Date |
2020-01-30 |
| Owner |
CHONGQING DONGQUN TECHNOLOGY CO., LTD. (China)
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| Inventor |
- Yue, Huiwei
- Li, Shichuan
- Long, Zhongxiang
- Jiang, Tao
- Liu, Quanfeng
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Abstract
Disclosed is a method for producing a zinc-containing complex or zinc oxide using a zinc-containing raw ore via an intermediate step for the synthesis of calcium zincate. The method for producing a zinc-containing complex using a zinc-containing raw ore via an intermediate step for the synthesis of calcium zincate comprises an extraction step, an optional purification step, a decarburization and precipitation step, a calcium zincate synthesis step, an optional rinsing step and a calcination step; and the method for producing zinc oxide using a zinc-containing raw ore via an intermediate step for the synthesis of calcium zincate comprises an extraction step, an optional purification step, a decarburization and precipitation step, a calcium zincate synthesis step, an optional rinsing step, a calcination step and a calcium-zinc separation step.
IPC Classes ?
- C22B 19/20 - Obtaining zinc otherwise than by distilling
- C22B 3/14 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions containing ammonia or ammonium salts
- C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
- C22B 19/34 - Obtaining zinc oxide
- C01G 9/03 - Processes of production using dry methods, e.g. vapour phase processes
- C01F 11/02 - Oxides or hydroxides
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4.
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METHOD FOR PRODUCING CALCIUM ZINCATE
| Application Number |
CN2019085932 |
| Publication Number |
2020/019823 |
| Status |
In Force |
| Filing Date |
2019-05-08 |
| Publication Date |
2020-01-30 |
| Owner |
CHONGQING DONGQUN TECHNOLOGY CO., LTD. (China)
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| Inventor |
- Yue, Huiwei
- Li, Shichuan
- Long, Zhongxiang
- Jiang, Tao
- Liu, Quanfeng
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Abstract
434233; optionally, purifying the extract; a decarburization step: adding calcium oxide and/or calcium hydroxide to the extract, stirring, and filtering to obtain a first solid and a first filtrate; a calcium zincate synthesis step: adding calcium hydroxide and/or calcium oxide to the first filtrate, stirring to react, and filtering to obtain a second solid and a second filtrate; optionally, rinsing the second solid with water; a drying step: drying the second solid to obtain the final calcium zincate product.
IPC Classes ?
- C01G 9/00 - Compounds of zinc
- B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
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5.
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MINERAL PROCESSING METHOD FOR LOW-GRADE ZINC-CONTAINING RAW ORE
| Application Number |
CN2019087246 |
| Publication Number |
2020/019834 |
| Status |
In Force |
| Filing Date |
2019-05-16 |
| Publication Date |
2020-01-30 |
| Owner |
CHONGQING DONGQUN TECHNOLOGY CO., LTD. (China)
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| Inventor |
- Yue, Huiwei
- Li, Shichuan
- Long, Zhongxiang
- Jiang, Tao
- Liu, Quanfeng
- Jiang, Wenyi
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Abstract
A mineral processing method for a low-grade zinc-containing raw ore, in particular, relating to a mineral processing method for a low-grade zinc-containing raw ore by a calcium zincate synthesis step. The method comprises a leaching step, a decarbonization/precipitation step, the calcium zincate synthesis step, and a drying and calcining step.
IPC Classes ?
- C22B 19/20 - Obtaining zinc otherwise than by distilling
- C22B 3/14 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions containing ammonia or ammonium salts
- C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
- C22B 19/34 - Obtaining zinc oxide
- C01G 9/03 - Processes of production using dry methods, e.g. vapour phase processes
- C01F 11/02 - Oxides or hydroxides
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