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Method for preparing high-purity titanium gypsum based on sulfuric acid method acidic wastewater
The invention discloses a method for preparing high-purity titanium gypsum based on sulfuric acid process acid wastewater, which specifically comprises the following steps: standing and precipitating the acid wastewater, and filtering and separating to obtain filtrate C; the preparation method comprises the following steps: adding an alkaline substance into deionized water to prepare a turbid liquid A; adding the turbid liquid A into the filtrate C, carrying out a first-stage neutralization reaction to obtain a turbid liquid B, stopping adding the turbid liquid A into the filtrate C when the pH value of the turbid liquid B is 2-5, and carrying out solid-liquid separation on the obtained turbid liquid B to obtain a filter cake A and filtrate A; sequentially drying and grinding the filter cake A to obtain high-purity titanium gypsum; adding the turbid liquid A into the filtrate A, carrying out a second-stage neutralization reaction to obtain a turbid liquid C, stopping adding the turbid liquid A into the filtrate A when the pH value of the turbid liquid C is 7-10, and carrying out solid-liquid separation on the obtained turbid liquid C to obtain a filter cake B and dischargeable wastewater; the filter cake B is sequentially subjected to reduction roasting and magnetic separation impurity removal treatment, and the high-purity titanium gypsum is obtained.
本发明公开了一种基于硫酸法酸性废水制备高纯度钛石膏的方法，具体为：将酸性废水静置沉淀，过滤分离，得到滤液C；将碱性物质加入到去离子水中，配制成悬浊液A；往滤液C中加入悬浊液A进行一段中和反应，得到悬浊液B，当悬浊液B的pH值为2～5时，停止往滤液C中加入悬浊液A，对得到的悬浊液B进行固液分离，得到滤饼A和滤液A；对滤饼A依次进行干燥、粉磨处理，得到高纯度钛石膏；往滤液A中加入悬浊液A进行二段中和反应，得到悬浊液C，当悬浊液C的pH值为7～10时，停止往滤液A中加入悬浊液A，对得到的悬浊液C进行固液分离，得到滤饼B和可排废水；将滤饼B依次进行还原焙烧和磁选除杂处理，得到高纯钛石膏。
Method for preparing high-purity titanium gypsum based on sulfuric acid method acidic wastewater
The invention discloses a method for preparing high-purity titanium gypsum based on sulfuric acid process acid wastewater, which specifically comprises the following steps: standing and precipitating the acid wastewater, and filtering and separating to obtain filtrate C; the preparation method comprises the following steps: adding an alkaline substance into deionized water to prepare a turbid liquid A; adding the turbid liquid A into the filtrate C, carrying out a first-stage neutralization reaction to obtain a turbid liquid B, stopping adding the turbid liquid A into the filtrate C when the pH value of the turbid liquid B is 2-5, and carrying out solid-liquid separation on the obtained turbid liquid B to obtain a filter cake A and filtrate A; sequentially drying and grinding the filter cake A to obtain high-purity titanium gypsum; adding the turbid liquid A into the filtrate A, carrying out a second-stage neutralization reaction to obtain a turbid liquid C, stopping adding the turbid liquid A into the filtrate A when the pH value of the turbid liquid C is 7-10, and carrying out solid-liquid separation on the obtained turbid liquid C to obtain a filter cake B and dischargeable wastewater; the filter cake B is sequentially subjected to reduction roasting and magnetic separation impurity removal treatment, and the high-purity titanium gypsum is obtained.
本发明公开了一种基于硫酸法酸性废水制备高纯度钛石膏的方法，具体为：将酸性废水静置沉淀，过滤分离，得到滤液C；将碱性物质加入到去离子水中，配制成悬浊液A；往滤液C中加入悬浊液A进行一段中和反应，得到悬浊液B，当悬浊液B的pH值为2～5时，停止往滤液C中加入悬浊液A，对得到的悬浊液B进行固液分离，得到滤饼A和滤液A；对滤饼A依次进行干燥、粉磨处理，得到高纯度钛石膏；往滤液A中加入悬浊液A进行二段中和反应，得到悬浊液C，当悬浊液C的pH值为7～10时，停止往滤液A中加入悬浊液A，对得到的悬浊液C进行固液分离，得到滤饼B和可排废水；将滤饼B依次进行还原焙烧和磁选除杂处理，得到高纯钛石膏。
Method for preparing high-purity titanium gypsum based on sulfuric acid method acidic wastewater
一种基于硫酸法酸性废水制备高纯度钛石膏的方法
PAN GANGHUA (author) / SUN JIAYU (author) / MENG HAINING (author) / ZHOU FEIFEI (author) / AO LIN (author) / LU XIAOJUN (author)
2023-09-15
Patent
Electronic Resource
Chinese
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
/
B03C
Magnetische oder elektrostatische Trennung fester Stoffe von festen Stoffen oder flüssigen oder gasförmigen Medien
,
MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS
/
C04B
Kalk
,
LIME
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