Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for treating high-iron bauxite through one-step calcification biomass transformation coupling
The invention discloses a method for treating high-iron bauxite through one-step calcification biomass transformation coupling, belongs to the technical field of solid waste resource reutilization in aluminum oxide production, and synchronously realizes dissolution and transformation of the high-iron bauxite in a high-pressure dissolution reactor under the coupling action of calcification and biomass. The alkali phase in the balance solid phase is converted into an alkali-free solid phase, the iron phase is converted into a magnetic iron phase, iron ore concentrate powder is obtained through magnetic separation treatment, and the obtained low-alkali red mud can be used for producing raw materials such as Portland cement, brick making, soil and silicon-calcium mineral fertilizer. The method comprises the specific steps of (1) pulpifying; (2) calcification-biomass transformation dissolution; (3) liquid-solid separation; (4) calcification biomass transformation slag magnetic separation; the method has the characteristics of simple process and equipment, high production efficiency, easiness in connection with the existing Bayer process production process, high comprehensive recovery rate of iron and aluminum and the like.
一步钙化生物质转型耦合处理高铁铝土矿的方法，属于氧化铝生产中固体废弃物资源再利用技术领域，高铁铝土矿在高压溶出反应器中在钙化和生物质的耦合作用下同步实现高铁铝土矿的溶出和转型，平衡固相中赋碱相转化成无碱固相、赋铁相转化成磁性铁相，经磁选处理，获得铁精矿粉，所得低碱赤泥能够用于生产硅酸盐水泥、制砖、土壤化和硅钙矿物质肥等原料。具体步骤：1)矿浆化，2)钙化‑生物质转型溶出，3)液固分离，4)钙化生物质转型渣磁选，5)选铁后磁选渣用于生产硅酸盐水泥、制砖、土壤化和硅钙矿物质肥。该方法具有工艺、设备简单，生产效率高，易与现有拜耳法生产工艺衔接，铁与铝综合回收率高等特点。
Method for treating high-iron bauxite through one-step calcification biomass transformation coupling
The invention discloses a method for treating high-iron bauxite through one-step calcification biomass transformation coupling, belongs to the technical field of solid waste resource reutilization in aluminum oxide production, and synchronously realizes dissolution and transformation of the high-iron bauxite in a high-pressure dissolution reactor under the coupling action of calcification and biomass. The alkali phase in the balance solid phase is converted into an alkali-free solid phase, the iron phase is converted into a magnetic iron phase, iron ore concentrate powder is obtained through magnetic separation treatment, and the obtained low-alkali red mud can be used for producing raw materials such as Portland cement, brick making, soil and silicon-calcium mineral fertilizer. The method comprises the specific steps of (1) pulpifying; (2) calcification-biomass transformation dissolution; (3) liquid-solid separation; (4) calcification biomass transformation slag magnetic separation; the method has the characteristics of simple process and equipment, high production efficiency, easiness in connection with the existing Bayer process production process, high comprehensive recovery rate of iron and aluminum and the like.
一步钙化生物质转型耦合处理高铁铝土矿的方法，属于氧化铝生产中固体废弃物资源再利用技术领域，高铁铝土矿在高压溶出反应器中在钙化和生物质的耦合作用下同步实现高铁铝土矿的溶出和转型，平衡固相中赋碱相转化成无碱固相、赋铁相转化成磁性铁相，经磁选处理，获得铁精矿粉，所得低碱赤泥能够用于生产硅酸盐水泥、制砖、土壤化和硅钙矿物质肥等原料。具体步骤：1)矿浆化，2)钙化‑生物质转型溶出，3)液固分离，4)钙化生物质转型渣磁选，5)选铁后磁选渣用于生产硅酸盐水泥、制砖、土壤化和硅钙矿物质肥。该方法具有工艺、设备简单，生产效率高，易与现有拜耳法生产工艺衔接，铁与铝综合回收率高等特点。
Method for treating high-iron bauxite through one-step calcification biomass transformation coupling
一步钙化生物质转型耦合处理高铁铝土矿的方法
ZHANG TINGAN (Autor:in) / WANG YIYONG (Autor:in) / WANG LONG (Autor:in) / LYU GUOZHI (Autor:in) / LIU YAN (Autor:in) / DOU ZHIHE (Autor:in) / WANG KUN (Autor:in)
05.12.2023
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
/
C04B
Kalk
,
LIME
/
C05D
INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C
,
Anorganische, nicht von den Unterklassen C05B, C05C umfasste Düngemittel
Comprehensive utilization method for high-iron bauxite
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