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公开(公告)号：US09441283B2
公开(公告)日：2016-09-13
申请号：US14582768
申请日：2014-12-24
申请人： PLEASON VENTURES LTD
发明人： Alexander Welter
CPC分类号： C22B3/44 , C01F7/04 , C01F7/14 , C01F7/46 , C01G49/02 , C01P2006/80 , C22B1/00 , C22B3/00 , C22B21/0007 , C22B21/04
摘要： Method for processing bauxite, including grinding the bauxite and extracting iron; separating the resulting pulp into a solid phase and a liquid phase; extracting aluminum from the liquid phase at a pH of about 7 to 8 to form a precipitate of sodium hydrogen carboaluminate; separating the precipitate of sodium hydrogen carboaluminate from the neutralized pulp; extracting iron from the neutralized liquid phase at a pH of at least about 12 using to form a precipitate of iron hydroxide; separating the precipitate of iron hydroxide from the basic pulp to form an iron ore concentrate and a mother liquor chelate; concentrating the mother liquor chelate using evaporation; cooling the concentrated solution; carbonizing the cooled solution with gaseous carbon dioxide under pressure to crystallize sodium hydrogen carbonate; and separating the crystallized sodium hydrogen carbonate from the carbonized solution to form a chelate liquid phase and a sodium hydrogen carbonate solid phase.
摘要翻译： 铝土矿处理方法，包括研磨铝土矿和提取铁; 将所得纸浆分离成固相和液相; 在约7至8的pH下从液相中提取铝以形成碳酸氢钠的沉淀; 从中和的纸浆中分离碳酸氢钠的沉淀物; 在至少约12的pH下从中和液相中提取铁，以形成氢氧化铁沉淀物; 从碱性纸浆中分离出氢氧化铁沉淀物，形成铁精矿和母液螯合物; 用蒸发浓缩母液螯合物; 冷却浓缩液; 在压力下用气态二氧化碳对冷却的溶液进行碳化以使碳酸氢钠结晶; 从碳酸化溶液中分离结晶的碳酸氢钠，形成螯合液相和碳酸氢钠固相。
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2.发明申请公开(公告)号：US20160186292A1
公开(公告)日：2016-06-30
申请号：US14582754
申请日：2014-12-24
申请人： PLEASON VENTURES LTD
发明人： Alexander WELTER
CPC分类号： C22B21/0015 , C22B3/44 , C22B21/0053 , Y02P10/234
摘要： A process for cold hydrochemical decomposition of sodium hydrogen aluminosilicate. The process includes decomposing sodium hydrogen aluminosilicate at low temperature with a chelate to form a solution of soluble compounds and insoluble contaminants; separating the insoluble contaminants from the solution with a coagulator and heating to coagulate the silicic acid and form a silicic acid gel; separating the silicic acid gel to form a silicic acid-free solution; decomposing the silicic acid-free solution to form a precipitate of sodium hydrogen carboaluminate and a mother liquor; separating the precipitate from the mother liquor; concentrating, cooling and regenerating the mother liquor and forming sodium hydrogen carbonate; separating the sodium hydrogen carbonate from the regenerated solution; and calcining the sodium hydrogen carboaluminate at a temperature of about 700 to about 900° C. and forming sodium aluminate.
摘要翻译： 氢铝硅酸铝的冷水化学分解过程。 该方法包括在低温下用螯合物分解铝硅酸钠，形成可溶性化合物和不溶性污染物的溶液; 用凝结器从溶液中分离出不溶性污染物，加热使硅酸凝结并形成硅酸凝胶; 分离硅酸凝胶以形成无硅酸溶液; 分解无硅酸溶液以形成碳酸氢钠和母液的沉淀物; 从母液中分离出沉淀物; 浓缩，冷却和再生母液并形成碳酸氢钠; 从再生溶液中分离出碳酸氢钠; 并在约700至约900℃的温度下煅烧碳酸氢钠，并形成铝酸钠。
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公开(公告)号：US09725785B2
公开(公告)日：2017-08-08
申请号：US14582754
申请日：2014-12-24
申请人： PLEASON VENTURES LTD
发明人： Alexander Welter
CPC分类号： C22B21/0015 , C22B3/44 , C22B21/0053 , Y02P10/234
摘要： A process for cold hydrochemical decomposition of sodium hydrogen aluminosilicate. The process includes decomposing sodium hydrogen aluminosilicate at low temperature with a chelate to form a solution of soluble compounds and insoluble contaminants; separating the insoluble contaminants from the solution with a coagulator and heating to coagulate the silicic acid and form a silicic acid gel; separating the silicic acid gel to form a silicic acid-free solution; decomposing the silicic acid-free solution to form a precipitate of sodium hydrogen carboaluminate and a mother liquor; separating the precipitate from the mother liquor; concentrating, cooling and regenerating the mother liquor and forming sodium hydrogen carbonate; separating the sodium hydrogen carbonate from the regenerated solution; and calcining the sodium hydrogen carboaluminate at a temperature of about 700 to about 900° C. and forming sodium aluminate.
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公开(公告)号：US20160186289A1
公开(公告)日：2016-06-30
申请号：US14582768
申请日：2014-12-24
申请人： PLEASON VENTURES LTD
发明人： Alexander WELTER
CPC分类号： C22B3/44 , C01F7/04 , C01F7/14 , C01F7/46 , C01G49/02 , C01P2006/80 , C22B1/00 , C22B3/00 , C22B21/0007 , C22B21/04
摘要： Method for processing bauxite, including grinding the bauxite and extracting iron; separating the resulting pulp into a solid phase and a liquid phase; extracting aluminium from the liquid phase at a pH of about 7 to 8 to form a precipitate of sodium hydrogen carboaluminate; separating the precipitate of sodium hydrogen carboaluminate from the neutralized pulp; extracting iron from the neutralized liquid phase at a pH of at least about 12 using to form a precipitate of iron hydroxide; separating the precipitate of iron hydroxide from the basic pulp to form an iron ore concentrate and a mother liquor chelate; concentrating the mother liquor chelate using evaporation; cooling the concentrated solution; carbonizing the cooled solution with gaseous carbon dioxide under pressure to crystallize sodium hydrogen carbonate; and separating the crystallized sodium hydrogen carbonate from the carbonized solution to form a chelate liquid phase and a sodium hydrogen carbonate solid phase.
摘要翻译： 铝土矿处理方法，包括研磨铝土矿和提取铁; 将所得纸浆分离成固相和液相; 在约7至8的pH下从液相中提取铝以形成碳酸氢钠的沉淀; 从中和的纸浆中分离碳酸氢钠的沉淀物; 在至少约12的pH下从中和液相中提取铁，以形成氢氧化铁沉淀物; 从碱性纸浆中分离出氢氧化铁沉淀物，形成铁精矿和母液螯合物; 用蒸发浓缩母液螯合物; 冷却浓缩液; 在压力下用气态二氧化碳对冷却的溶液进行碳化以使碳酸氢钠结晶; 从碳酸化溶液中分离结晶的碳酸氢钠，形成螯合液相和碳酸氢钠固相。
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