Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Sulfuric acid process titanium dioxide acidolysis waste harmless resource utilization method
The invention discloses a sulfuric acid process titanium dioxide acidolysis waste harmless resource utilization method, which comprises the following steps: S1, uniformly stirring dilute tail water or dilute tail water mixed with pretreated acidolysis residues, then adding stone slurry under a stirring condition, and neutralizing until the pH value is 1.2-2 to obtain a suspended mixture; and S2, injecting the suspended mixture into a filter press, carrying out secondary squeezing, neutralizing filtrate with stone slurry until the pH value is 2.5-5, recovering TiO2, and collecting filter residues, wherein the the filter residues are used as gypsum for producing cement. According to the invention, insoluble residues can be used for producing gypsum, so that waste is turned into wealth, and no acid residue waste is generated any more; and soluble TiO2 in acidolysis residues can be recycled for reutilization while the problems of high treatment cost, poor effect, environmental pollution and resource waste of the sulfuric acid process titanium dioxide acidolysis waste are solved.
本发明公开了一种硫酸法钛白酸解废料无害化资源利用方法，包括以下步骤：S1：将淡尾水或与预处理后的酸解残渣混合的淡尾水搅拌均匀，然后在搅拌条件下加入石浆中和至pH值为1.2～2，得悬浮混合物；S2：将悬浮混合物注入压滤机进行二次压榨，滤液用石浆中和至pH值为2.5～5，并回收TiO2；收集滤渣，将其作为石膏用于生产水泥。本发明不仅能够把不溶性残渣用于生产石膏，变废为宝，不再产生酸性残渣废弃物；而且能够回收酸解残渣中的可溶性TiO2进行再利用，同时解决了硫酸法钛白酸解废料处理成本高、效果差、环境污染和资源浪费的问题。
Sulfuric acid process titanium dioxide acidolysis waste harmless resource utilization method
The invention discloses a sulfuric acid process titanium dioxide acidolysis waste harmless resource utilization method, which comprises the following steps: S1, uniformly stirring dilute tail water or dilute tail water mixed with pretreated acidolysis residues, then adding stone slurry under a stirring condition, and neutralizing until the pH value is 1.2-2 to obtain a suspended mixture; and S2, injecting the suspended mixture into a filter press, carrying out secondary squeezing, neutralizing filtrate with stone slurry until the pH value is 2.5-5, recovering TiO2, and collecting filter residues, wherein the the filter residues are used as gypsum for producing cement. According to the invention, insoluble residues can be used for producing gypsum, so that waste is turned into wealth, and no acid residue waste is generated any more; and soluble TiO2 in acidolysis residues can be recycled for reutilization while the problems of high treatment cost, poor effect, environmental pollution and resource waste of the sulfuric acid process titanium dioxide acidolysis waste are solved.
本发明公开了一种硫酸法钛白酸解废料无害化资源利用方法，包括以下步骤：S1：将淡尾水或与预处理后的酸解残渣混合的淡尾水搅拌均匀，然后在搅拌条件下加入石浆中和至pH值为1.2～2，得悬浮混合物；S2：将悬浮混合物注入压滤机进行二次压榨，滤液用石浆中和至pH值为2.5～5，并回收TiO2；收集滤渣，将其作为石膏用于生产水泥。本发明不仅能够把不溶性残渣用于生产石膏，变废为宝，不再产生酸性残渣废弃物；而且能够回收酸解残渣中的可溶性TiO2进行再利用，同时解决了硫酸法钛白酸解废料处理成本高、效果差、环境污染和资源浪费的问题。
Sulfuric acid process titanium dioxide acidolysis waste harmless resource utilization method
一种硫酸法钛白酸解废料无害化资源利用方法
WANG YEJUN (Autor:in) / XUAN JIE (Autor:in) / MENG CAIGUI (Autor:in) / LIANG YOUHE (Autor:in)
28.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
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
| Europäisches Patentamt | 2022
Harmless resource utilization method of zinc electrolysis acid leaching residue
| Europäisches Patentamt | 2016
Resource utilization of titanium dioxide waste acid for preparation of polyferric sulfate
| DOAJ | 2025
Harmless resource utilization method of cyaniding gold extraction tailing slag
| Europäisches Patentamt | 2021
Harmless resource utilization method for dump leaching tailings in gold industry
| Europäisches Patentamt | 2023