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yyb2008: ½ð±Ò+20, ·­ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-08-04 17:15:32
±¾ÎÄ Í¨¹ý¶Ô ¶àÔªº¬ÎýÎïÁÏ ÖеÄSO42-¡¢AsÒÔ¼°FeµÈ ÔÓÖÊÀë×ÓµÄ È¥³ý½øÐÐÁË Ñо¿£¬²ÉÈ¡¸ßμîÈÚ·¨£¬ÒÀ´Îͨ¹ýÎýËáÄÆÖÆ´Ö¡¢½þ³ö¡¢Å¨Ëõ¡¢ºæ¸É¡¢·ÛËéµÈ¹¤Ðò À´ÖƱ¸ ¸ß´¿ÎýËáÄÆ¡£±¾ÎÄ ÖØµãÑо¿ ¶àÔªº¬ÎýÎïÁÏÖÐ µÄSO42-¡¢As¡¢FeµÈÔÓÖÊÀë×Ó µÄÈ¥³ý£¬·Ö±ð ¶Ô̼ËáÄÆ ¼ÓÈëŨ¶È¡¢CaO¼ÓÈëÁ¿¡¢±ºÉÕζȡ¢±ºÉÕʱ¼ä¡¢½þ³öʱ¼ä Ïà¹ØÒòËØ ¶Ô ÔÓÖÊÀë×Ó µÄÈ¥³ý ½øÐÐÁËÑо¿£¬³É¹¦ ÑÐÖÆ³ö Ò»Öָߴ¿ÎýËáÄÆµÄÉú²ú¹¤ÒÕ¡£
In this paper, we researched the method of removing foreign ions such as SO42-, As and Fe in multiple Tin-bearing material. By employing the high temperature alkali melt method, we made an attempt to prepare the high purity sodium stannate by successively conducting experimental processes like coarse product preparation, extraction,concentration, drying and crushing. Focusing on the removal of foreign ions such as SO42-, As and Fe, we analyzed the impacting factors to the removal ratio of foreign ions such as the added concentration of sodium carbonate, dosage of CaO, calcination temperature,  calcination time, and extraction time, thus successfully designing a production technology for high purity sodium stannate.
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