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難選赤鐵礦熔融還原煉鐵及熔渣制備微晶玻璃

Preparation of glass-ceramics by the slag of iron melt-reduction from unwieldy hematite

  • 摘要: 以河北宣化赤鐵礦為主要原料,采用熔融還原法煉鐵和澆鑄工藝制備熔渣微晶玻璃,獲得了可用于煉鋼的生鐵原料和建筑裝飾用微晶玻璃.利用正交試驗設計方法探討了不同原料配比組成條件下渣鐵分離和熔渣微晶玻璃晶化的效果,確定了可用于工業試驗的最佳原料配比(質量配比)為:赤鐵礦石77.3%,氧化鋁粉2.2%,生石灰13.7%,螢石5%,氧化鈉1.8%,焦炭5.5%.并通過光學顯微分析、X射線衍射分析、物理化學性能測試等手段確定了微晶玻璃的物相組成及性能特征.

     

    Abstract: The feasibility of iron-smelting and making glass-ceramics from unwieldy hematite of Xuanhua Iron Mine in Hebei Province, China by melt-reduction method and casting technology was analyzed to prepare pig iron used in steel-making and glass-ceramics for building decoration. By using orthogonal design method, slag-iron separation and slag crystallization were investigated at different ratios of raw materials, and the optimum proportioning by weight of raw materials which could be used in industrial test was determined as the following:hematite 77.3%, alumina 2.2%, quicklime 13.7%, fluor 5%, sodium oxide 1.8%, and coke 5.5%. The phase composition and characteristics of glass-ceramics products were determined by comprehensive methods such as optical microscopy, X-ray diffraction, and physical and chemical properties test.

     

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