Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of macrocrystalline magnesia with low silicon dioxide content
The invention discloses a preparation method of macrocrystalline magnesia with low silicon dioxide content, and belongs to the technical field of mineral resource processing. The method comprises thefollowing steps: (1) fine selection: taking low-grade magnesite as a raw material, and finely selecting magnesite with the magnesium oxide content of 40%-45%; (2) cleaning: cleaning magnesite; (3) refining: refining the magnesite; (4) roasting: feeding the concentrate powder into a rotary kiln or a fluidized bed furnace for roasting, and cooling to room temperature to obtain light calcined magnesia; (5) dry pressing: feeding the light calcined magnesia into a ball press machine for dry pressing to obtain balls; and (6) electric melting: feeding the spheres prepared in the step (5) into an electric arc furnace for electric melting, and carrying out heat preservation, cooling and crystallization. The prepared macrocrystalline magnesia has good performance advantages, the test parameters suchas the particle volume density, the magnesium oxide content, the silicon dioxide content, the calcium oxide content, the iron oxide content, the aluminum oxide content and the yield show significantdifferences, and the macrocrystalline magnesia is high-quality macrocrystalline magnesia.
本发明公开了一种低二氧化硅含量的大结晶镁砂的制备方法，属于矿产资源加工技术领域。它包括以下步骤：(1)精选：以低品位菱镁矿为原料，精选出氧化镁含量为40％‑45％的菱镁矿；(2)清洗：将菱镁矿清洗；(3)精制：将菱镁矿进行精制；(4)焙烧：将精矿粉送至回转窑或沸腾炉中进行焙烧，冷却至室温，得到轻烧氧化镁；(5)干压：将轻烧氧化镁送至压球机中进行干压，制得球体；(6)电熔：将步骤(5)制得的球体送至电弧炉中进行电熔，保温冷却结晶。本发明制备的大结晶镁砂具有良好的性能优势，颗粒体积密度、氧化镁含量、二氧化硅含量、氧化钙含量、氧化铁含量、氧化铝含量及收得率等试验参数均体现了显著性差异，为优质的大结晶镁砂。
Preparation method of macrocrystalline magnesia with low silicon dioxide content
The invention discloses a preparation method of macrocrystalline magnesia with low silicon dioxide content, and belongs to the technical field of mineral resource processing. The method comprises thefollowing steps: (1) fine selection: taking low-grade magnesite as a raw material, and finely selecting magnesite with the magnesium oxide content of 40%-45%; (2) cleaning: cleaning magnesite; (3) refining: refining the magnesite; (4) roasting: feeding the concentrate powder into a rotary kiln or a fluidized bed furnace for roasting, and cooling to room temperature to obtain light calcined magnesia; (5) dry pressing: feeding the light calcined magnesia into a ball press machine for dry pressing to obtain balls; and (6) electric melting: feeding the spheres prepared in the step (5) into an electric arc furnace for electric melting, and carrying out heat preservation, cooling and crystallization. The prepared macrocrystalline magnesia has good performance advantages, the test parameters suchas the particle volume density, the magnesium oxide content, the silicon dioxide content, the calcium oxide content, the iron oxide content, the aluminum oxide content and the yield show significantdifferences, and the macrocrystalline magnesia is high-quality macrocrystalline magnesia.
本发明公开了一种低二氧化硅含量的大结晶镁砂的制备方法，属于矿产资源加工技术领域。它包括以下步骤：(1)精选：以低品位菱镁矿为原料，精选出氧化镁含量为40％‑45％的菱镁矿；(2)清洗：将菱镁矿清洗；(3)精制：将菱镁矿进行精制；(4)焙烧：将精矿粉送至回转窑或沸腾炉中进行焙烧，冷却至室温，得到轻烧氧化镁；(5)干压：将轻烧氧化镁送至压球机中进行干压，制得球体；(6)电熔：将步骤(5)制得的球体送至电弧炉中进行电熔，保温冷却结晶。本发明制备的大结晶镁砂具有良好的性能优势，颗粒体积密度、氧化镁含量、二氧化硅含量、氧化钙含量、氧化铁含量、氧化铝含量及收得率等试验参数均体现了显著性差异，为优质的大结晶镁砂。
Preparation method of macrocrystalline magnesia with low silicon dioxide content
一种低二氧化硅含量的大结晶镁砂的制备方法
BI SHENGMIN (Autor:in) / BI YIMING (Autor:in) / DONG BAOHUA (Autor:in) / SUN XIZHONG (Autor:in) / ZHAO QUAN (Autor:in) / QIN NAN (Autor:in) / ZHONG GANG (Autor:in) / WANG FEI (Autor:in) / WANG YE (Autor:in) / JIA MINGXIN (Autor:in)
18.12.2020
Patent
Elektronische Ressource
Chinesisch
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