Recovery of lithium carbonate专利检索-煤饼煤燃料燃料种类专利检索查询-专利查询网

Recovery of lithium carbonate

阅读：755发布：2022-05-29

专利汇可以提供Recovery of lithium carbonate专利检索，专利查询，专利分析的服务。并且Lithium carbonate is recovered from an aqueous slurry by first treating the sparingly soluble lithium carbonate with carbon dioxide to convert it to the much more soluble lithium bicarbonate. The bicarbonate solution is next separated from insoluble material present and then decarbonated to precipitate lithium carbonate, which is then recovered. The present process is of particular utility for the recovery of lithium carbonate from fly ash- and coke-containing filter cakes resulting from a process for the treatment of flue gas to remove sulfur dioxide present therein by absorption of the sulfur dioxide in a molten alkali metal carbonate mixture.，下面是Recovery of lithium carbonate专利的具体信息内容。

权利要求

1. A PROCESS FOR RECOVERING LITHIUM CARBONATE FROM A FILTER CAKE CONTAINING ALKALI METAL CARBONATES IN ADMIXTURE WITH FLY-ASH-CONTAINING PARTICULATE MATTER, SAID FILTER CAKE BEING OBTAINED FROM A CLOSED-CYCLE PROCESS FOR THE REMOVAL OF SULFUR OXIDES FROM A FLY-ASH-CONTAINING FLUE GAS, SAID CLOSED-CYCLE PROCESS INCLUDING STAGES OF ABSORPTION AND REDUCTION, AND WHERE, IN THE ABSORPTION STAGE SAID FLUE GAS IS CONTACTED WITH A MOLTEN SALT MIXTURE CONTAINING THE CARBONATES OF SODIUM, POTASSIUM, AND LITHIUM AS THE ACTIVE ABSORBENT FOR SAID SULFUR OXIDES TO CONVERT A PORTION OF THE MOLTEN ABSORBENT TO ALKALI METAL SULFITES AND SULFATES, AND WHERE A POROUS FILTER CAKE OF FLY ASH WHICH CONTAINS CARBONATE MELT IS OBTAINED BY FILTRATION OF THE MELT DOWNSTREAM FROM SAID ABSORPTION STAGE, AND WHERE, IN THE REDUCTION STAGE THE CONVERTED ABSORBENT IN THE MELT IS REDUCED TO ALKALI METAL SULFIDES BY CONTACT WITH A CARBONACEOUS REDUCING AGENT, AND WHERE A POROUS FILTER CAKE OF THE CARBONACEOUS MATERIAL WHICH CONTAINS CARBONATE MELT IS OBTAINED BY FILTRATION OF THE MELT DOWNSTREAM FROM SAID REDUCTION STEP, THE IMPROVEMENT PROVIDING ECONOMIC RECOVERY FROM SAID FILTER CAKES OF THE CARBONATE-CONTAINING MELT THEREIN FOR REUSE IN SAID CLOSED-CYCLE PROCESS WHICH COMPRISES THE SEQUENTIAL STEPS OF: FORMING AN AQUEOUS SLURRY OF THE FLY ASH AND CARBONACEOUS FILTER CAKES, FILTERING SAID SLURRY TO REMOVE IN SAID FILTRATE THE DISSOLVED SODIUM CARBONATE AND POTASSIUM CARBONATE COMPONENTS OF THE MELT AND THE DISSOLVED WATER-SOLUBLE COMPONENTS OF THE FILTER CAKES AND RECOVER A SECOND FILTER CAKE CONTAINING THE LITHIUM CARBONATE COMPONENT OF THE MELT AND THE WATER-INSOLUBLE COMPONENTS OF SAID FLY ASH AND CARBONACEOUS FILTER CAKES, FORMING A SECOND AQUEOUS SLURRY FROM SAID SECOND FILTER CAKE, CARBONATING SAID SECOND SLURRY TO CONVERT THE INSOLUBLE LITHIUM CARBONATE THEREIN TO SOLUBLE LITHIUM BICARBONATE IN AQUEOUS SOLUTION, FILTERING THE SOLUTION TO RECOVER IN THE FILTRATE THE DISSOLVED LITHIUM BICARBONATE, DECARBONATING THE LITHIUM BICARBONATE SOLUTION TO PRECIPITATE LITHUM CARBONATE IN THE AQUEOUS MEDIUM AND FILTERING SAID AQUEOUS MEDIUM TO SEPARATELY RECOVER THE LITHIUM CARBONATE THEREFROM FOR RECYCLE IN THE PROCESS.

2. The process according to claim 1 wherein the carbonation is performed at a temperature between 0* and 10*C at a pressure between 10 and 30 psig of CO2, and the decarbonation is performed by bubbling air through the solution.

3. The process according to claim 1 wherein the filtrate from the last filtration step is combined with the second aqueous slurry for carbonation therewith.

说明书全文

相关专利内容

标题	发布/更新时间	阅读量
含有多种有益菌和微量元素炭基肥及其制备方法	2020-05-14	493
一种从独居石精矿中冶炼分离铀、钍和稀土的工艺方法	2020-05-08	231
一种放热稳定的多层结构复合生物质颗粒燃料及制备方法	2020-05-08	874
一种海洋高温高压水基型钻井液	2020-05-13	98
基于水热反应的低阶煤制备高炉喷吹半焦方法	2020-05-11	820
膨胀土地层盾构下穿雨水箱涵的施工方法	2020-05-11	558
一株分解煤矸石的草酸青霉菌	2020-05-13	625
一种薄板大砖用高岭土的制备工艺	2020-05-12	954
一种工程泥浆处理系统及方法	2020-05-12	491
板框压滤机	2020-05-08	975

高效检索全球专利

专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。

我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。

申请试用

分析报告

专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。

申请试用

煤饼热门专利

热门分类

Recovery of lithium carbonate

该功能需要专业版企业版VIP权限，您可以：