T/CPCIF 0171-2021 Active Group standards

T/CPCIF 0171-2021 Titanium dioxide leaching waste residue titanium resource recovery treatment method

Publish Date: 2021-12-30 Implement Date: 2022-04-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CPCIF 0171-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Environmental protection

ICS Name: Recycling

Publish Date: 2021-12-30

Implement Date: 2022-04-01

Scope

Scope: This document specifies the recovery and treatment methods for the acid-soluble waste residue from titanium dioxide powder produced by the sulfuric acid method, as well as environmental protection measures. This document applies to the recovery and treatment of acid-soluble waste residue from titanium dioxide powder produced by the sulfuric acid method. Main technical content: 4. Recovery and treatment methods 4.1 Magnetic separation method 4.1.1 Method summary: Applicable to the recovery of titanium from the residue after acid dissolution in the production process of titanium dioxide powder by the sulfuric acid method, using ilmenite, acid-soluble titanium slag, and a mixture of ilmenite and acid-soluble titanium slag as raw materials. Through methods such as filter press and magnetic separation, the filtrate and magnetic separation materials are separated from the waste residue, and the filtrate and magnetic separation materials are returned to the production system, while the waste residue is discharged to the wastewater treatment system. 4.1.2 Process flow: The acid-soluble waste residue is filtered, and the filtrate is returned to the production system. The filter cake is pulped and processed, and the magnetic separation material is subjected to magnetic separation after being treated with a magnetic separator. The unmagnetized material is filtered again, and the filtrate is reused. After the filter cake is pulped, it is sent to the wastewater treatment system. 4.1.3 Process control conditions 4.1.3.1 Slurry concentration: 300 g/L to 500 g/L. 4.1.3.2 Magnetic roller drum speed: 15 r/min to 30 r/min. 4.1.3.3 Magnetic separation intensity: 3000 Gs to 9000 Gs. 4.1.3.4 Drying temperature: 90 ℃ to 110 ℃. 4.1.4 Main equipment: Filter press, pulping tank, mixer, magnetic separator, filter press, and drying kiln. 4.2 Flotation method 4.2.1 Method summary: Applicable to the recovery of titanium from the residue after acid dissolution in the production process