Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing silicon steel magnesium oxide by taking dolomite and bischofite as raw materials
The invention provides a method for preparing silicon steel magnesium oxide by using dolomite and bischofite as raw materials, which comprises the following steps: step 1, crushing and calcining dolomite to obtain light-burned dolomite, adding the light-burned dolomite into water, and digesting and hydrating to form dolomite digestive fluid; step 2, dissolving bischofite, filtering and removing impurities to prepare a magnesium chloride solution; 3, boric acid is added into the magnesium chloride solution, and the content of boron in magnesium oxide is controlled to be 0.005-0.12%; step 4, adding the magnesium chloride solution into the dolomite digestive juice, stirring, reacting to form magnesium hydroxide precipitate, and cleaning and filter-pressing the prepared magnesium hydroxide precipitate to obtain a magnesium hydroxide filter cake; and 5, calcining the magnesium hydroxide filter cake to obtain magnesium oxide. According to the invention, two cheap resources of dolomite and bischofite are used as raw materials to prepare high-quality silicon-steel-grade magnesium oxide, and the method has the advantages of low cost, high resource utilization efficiency and the like.
本发明提供一种以白云石和水氯镁石为原料制备硅钢氧化镁的方法，包括如下步骤：步骤1，将白云石粉碎、煅烧制得轻烧白云石，将轻烧白云石加入水中消化水合形成白云石消化液；步骤2，将水氯镁石溶解、过滤除杂制成氯化镁溶液；步骤3，在氯化镁溶液中添加硼酸，将氧化镁中硼含量控制在0.005~0.12%；步骤4，将氯化镁溶液加入到白云石消化液中搅拌、反应形成氢氧化镁沉淀，制得的氢氧化镁沉淀经清洗、压滤得到氢氧化镁滤饼；步骤5，氢氧化镁滤饼经煅烧制得氧化镁。本发明是以白云石和水氯镁石两种廉价资源为原料，制备出优质的硅钢级氧化镁，具有成本低、资源利用效率高等优点。
Method for preparing silicon steel magnesium oxide by taking dolomite and bischofite as raw materials
The invention provides a method for preparing silicon steel magnesium oxide by using dolomite and bischofite as raw materials, which comprises the following steps: step 1, crushing and calcining dolomite to obtain light-burned dolomite, adding the light-burned dolomite into water, and digesting and hydrating to form dolomite digestive fluid; step 2, dissolving bischofite, filtering and removing impurities to prepare a magnesium chloride solution; 3, boric acid is added into the magnesium chloride solution, and the content of boron in magnesium oxide is controlled to be 0.005-0.12%; step 4, adding the magnesium chloride solution into the dolomite digestive juice, stirring, reacting to form magnesium hydroxide precipitate, and cleaning and filter-pressing the prepared magnesium hydroxide precipitate to obtain a magnesium hydroxide filter cake; and 5, calcining the magnesium hydroxide filter cake to obtain magnesium oxide. According to the invention, two cheap resources of dolomite and bischofite are used as raw materials to prepare high-quality silicon-steel-grade magnesium oxide, and the method has the advantages of low cost, high resource utilization efficiency and the like.
本发明提供一种以白云石和水氯镁石为原料制备硅钢氧化镁的方法，包括如下步骤：步骤1，将白云石粉碎、煅烧制得轻烧白云石，将轻烧白云石加入水中消化水合形成白云石消化液；步骤2，将水氯镁石溶解、过滤除杂制成氯化镁溶液；步骤3，在氯化镁溶液中添加硼酸，将氧化镁中硼含量控制在0.005~0.12%；步骤4，将氯化镁溶液加入到白云石消化液中搅拌、反应形成氢氧化镁沉淀，制得的氢氧化镁沉淀经清洗、压滤得到氢氧化镁滤饼；步骤5，氢氧化镁滤饼经煅烧制得氧化镁。本发明是以白云石和水氯镁石两种廉价资源为原料，制备出优质的硅钢级氧化镁，具有成本低、资源利用效率高等优点。
Method for preparing silicon steel magnesium oxide by taking dolomite and bischofite as raw materials
一种以白云石和水氯镁石为原料制备硅钢氧化镁的方法
LIU YUE (Autor:in) / LIU YUFENG (Autor:in) / PENG CHAO (Autor:in) / WU SHIWANG (Autor:in)
03.06.2022
Patent
Elektronische Ressource
Chinesisch
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