Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for comprehensively utilizing magnesite
The invention relates to a method for comprehensively utilizing magnesite. The method comprises the steps: step 1, grinding magnesite to pass through a 100-mesh sieve finely; step 2, heating and decomposing an ammonium sulfate solid to prepare an ammonium bisulfate solution; step 3, adding the fine ore obtained in the step 1 into the ammonium bisulfate solution obtained in the step 2, and mixing to prepare ore pulp; step 4, carrying out a heating reaction on the ore pulp,, adding oxalic acid after the reaction is completed, carrying out first-time solid-liquid separation after the reaction isuniform, and thus obtaining crude liquid and leaching residues; step 5, sequentially introducing air and a part of ammonia gas generated in the step 2 into the obtained crude liquid, and carrying outsecondary solid-liquid separation to obtain a pure solution containing magnesium ions and solid slag containing aluminum and iron; and step 6, simultaneously introducing the ammonia gas generated in the step 2 and the carbon dioxide gas generated in the step 4 into the magnesium ion-containing solution obtained in the step 5, and carrying out third solid-liquid separation after the reaction is finished to obtain basic magnesium carbonate and an ammonium sulfate solution. According to the invention, the purpose of ecological comprehensive treatment of magnesite is realized.
本发明涉及一种综合利用菱镁矿的方法，步骤一、将菱镁矿磨细至通过100目筛；步骤二、将硫酸铵固体加热分解，制备硫酸氢铵溶液；步骤三、将步骤一获得的细矿加入步骤二获得的硫酸氢铵溶液中混合制成矿浆；步骤四、将矿浆加热反应，反应结束后加入草酸，反应均匀后进行第一次固液分离，获得粗液和浸出渣；步骤五、向获得的粗液中依次通入空气和步骤二产生的部分氨气后进行第二次固液分离，获得纯净的含镁离子溶液和含铝铁的固体渣；步骤六、将步骤五得到的含镁离子溶液同时通入步骤二产生的氨气和步骤四产生的二氧化碳气体，反应结束后进行第三次固液分离，获得碱式碳酸镁和硫酸铵溶液。本发明实现了菱镁矿生态化综合处理的目的。
Method for comprehensively utilizing magnesite
The invention relates to a method for comprehensively utilizing magnesite. The method comprises the steps: step 1, grinding magnesite to pass through a 100-mesh sieve finely; step 2, heating and decomposing an ammonium sulfate solid to prepare an ammonium bisulfate solution; step 3, adding the fine ore obtained in the step 1 into the ammonium bisulfate solution obtained in the step 2, and mixing to prepare ore pulp; step 4, carrying out a heating reaction on the ore pulp,, adding oxalic acid after the reaction is completed, carrying out first-time solid-liquid separation after the reaction isuniform, and thus obtaining crude liquid and leaching residues; step 5, sequentially introducing air and a part of ammonia gas generated in the step 2 into the obtained crude liquid, and carrying outsecondary solid-liquid separation to obtain a pure solution containing magnesium ions and solid slag containing aluminum and iron; and step 6, simultaneously introducing the ammonia gas generated in the step 2 and the carbon dioxide gas generated in the step 4 into the magnesium ion-containing solution obtained in the step 5, and carrying out third solid-liquid separation after the reaction is finished to obtain basic magnesium carbonate and an ammonium sulfate solution. According to the invention, the purpose of ecological comprehensive treatment of magnesite is realized.
本发明涉及一种综合利用菱镁矿的方法，步骤一、将菱镁矿磨细至通过100目筛；步骤二、将硫酸铵固体加热分解，制备硫酸氢铵溶液；步骤三、将步骤一获得的细矿加入步骤二获得的硫酸氢铵溶液中混合制成矿浆；步骤四、将矿浆加热反应，反应结束后加入草酸，反应均匀后进行第一次固液分离，获得粗液和浸出渣；步骤五、向获得的粗液中依次通入空气和步骤二产生的部分氨气后进行第二次固液分离，获得纯净的含镁离子溶液和含铝铁的固体渣；步骤六、将步骤五得到的含镁离子溶液同时通入步骤二产生的氨气和步骤四产生的二氧化碳气体，反应结束后进行第三次固液分离，获得碱式碳酸镁和硫酸铵溶液。本发明实现了菱镁矿生态化综合处理的目的。
Method for comprehensively utilizing magnesite
一种综合利用菱镁矿的方法
WU YUSHENG (Autor:in) / LI LAISHI (Autor:in) / LIU NING (Autor:in) / LIU JINLIANG (Autor:in)
17.07.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
C04B
Kalk
,
LIME
Method for comprehensively utilizing sodium fluosilicate production wastewater
| Europäisches Patentamt | 2023