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Full resource utilization process of titanium white waste acid

A technology of titanium dioxide waste acid and all resources, which is applied to the improvement of process efficiency, the preparation/treatment of rare earth metal compounds, manganese sulfate, etc., can solve the problems of high recycling cost, occupying land resources, complicated process, etc., and achieve good promotion foreground effect

Inactive Publication Date: 2020-08-04
张响
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The first treatment method will produce a large amount of sulfuric acid slag. Due to the high content of impurities and no recycling value, these waste residues can only be discarded and stored, and occupy a large amount of land resources.
The second treatment method is complicated in process and high in recycling cost, so not all titanium dioxide manufacturers are qualified to apply it

Method used

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  • Full resource utilization process of titanium white waste acid

Examples

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Effect test

Embodiment 1

[0016] A process for fully resource utilization of titanium dioxide waste acid, specifically comprising the following steps:

[0017] 1) Use titanium dioxide waste acid and ferrous sulfate to reduce leaching manganese oxide ore to make iron oxide normal temperature desulfurizer: use manganese oxide ore to oxidize iron ions in titanium dioxide waste acid, and use titanium dioxide waste acid and ferrous sulfate to reduce leaching and oxidation The manganese ions in the manganese ore are subjected to solid-liquid separation after leaching to obtain solid leaching slag and leaching iron and manganese sulfate solution, adding ferrous sulfate lime to the solid leaching slag, mixing, extruding and forming, and drying to obtain iron oxide desulfurizer at room temperature;

[0018] 2) magnesium soap extraction is carried out to leaching iron and manganese sulfate solution to separate iron and manganese: magnesium oxide saponification P204 technology is adopted for leaching iron and mang...

Embodiment 2

[0021] A process for fully resource utilization of titanium dioxide waste acid, specifically comprising the following steps:

[0022] 1) Use titanium dioxide waste acid and ferrous sulfate to reduce leaching manganese oxide ore to make iron oxide normal temperature desulfurizer: use manganese oxide ore to oxidize iron ions in titanium dioxide waste acid, and use titanium dioxide waste acid and ferrous sulfate to reduce leaching and oxidation The manganese ions in the manganese ore are subjected to solid-liquid separation after leaching to obtain solid leaching slag and leaching iron and manganese sulfate solution, adding ferrous sulfate lime to the solid leaching slag, mixing, extruding and forming, and drying to obtain iron oxide desulfurizer at room temperature;

[0023] 2) magnesium soap extraction is carried out to leaching iron and manganese sulfate solution to separate iron and manganese: magnesium oxide saponification P507 technology is adopted to leaching iron and manga...

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Abstract

The invention relates to a full resource utilization process of titanium white waste acid. The process specifically comprises the following steps: (1) reducing and leaching manganese oxide ore by using titanium white waste acid and ferrous sulfate to prepare an iron oxide normal-temperature desulfurizer; (2) carrying out magnesium soap extraction on a leached ferric manganese sulfate solution to separate iron and manganese; and (3) treating with an organic phase extractant to respectively recover vanadium, titanium, iron and scandium. The process has the advantages that P204 / 507 is adopted toextract and vanadium, titanium and scandium ions of the enriched titanium white waste acid, full resource utilization of the titanium white waste acid in the real sense is achieved, no new three-wasteproducts are generated, the concepts of energy conservation and environmental protection are met, and the process has a good popularization prospect in the technical field.

Description

technical field [0001] The invention relates to the technical field of environmental protection processes, in particular to a process for fully resource utilization of titanium dioxide waste acid. Background technique [0002] At present, the solid-phase method is the main method for preparing lithium ferrous phosphate for commercial use. However, due to the high cost of ferrous iron source, difficult storage, large particle size (D>1μm) and poor uniformity of the synthesized lithium ferrous phosphate, it is difficult to meet the power requirements. demand for lithium-ion batteries. Barker applied the carbothermic reduction method to the preparation of LiFePO4. When synthesizing LiFePO4 by the carbothermic reduction method, cheap and stable ferric iron was used instead of ferrous iron as the iron source. Fe3+ is reduced to Fe2+ to prepare LiFePO4, and the remaining carbon acts as a conductive agent in the LiFePO4 product. The iron source for preparing lithium iron phosp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/38C22B34/22C22B34/12C22B59/00C22B47/00C01G45/10C01B25/37C01G49/02C01F17/212C01F17/17
CPCC01B25/375C01G45/10C01G49/02C22B34/12C22B34/22C22B47/00C22B59/00C01F17/17C01F17/212C22B3/3844C22B3/3846Y02P10/20
Inventor 张响
Owner 张响
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