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Treatment method for improving solid-liquid separation effect after titanium slag acid leaching treatment

A treatment method and solid-liquid separation technology are applied in the treatment field of improving the solid-liquid separation effect after acid leaching of titanium slag, which can solve the problems of low efficiency and poor separation effect, achieve low dosage, high cost performance, and improve solid-liquid separation. The effect of separation efficiency

Active Publication Date: 2021-12-28
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the problems existing in the prior art, the object of the present invention is a treatment method for improving the solid-liquid separation effect after acid leaching treatment of titanium slag, which solves the problems of low efficiency and poor separation effect during solid-liquid separation of titanium slag acid leaching liquid

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Effect test

Embodiment 1

[0056] This embodiment provides a treatment method for improving the effect of solid-liquid separation after acid leaching treatment of titanium slag. The treatment method includes the following steps: pretreatment, solid-liquid separation, first acid treatment, second acid treatment and stirring of titanium slag in sequence Treat and stand still, and then obtain titanium-containing liquid through solid-liquid separation;

[0057] The titanium slag includes: 25% silicon dioxide, 10% aluminum oxide, 40% titanium oxide and impurity elements Fe, Ca, Mg, Al and Si;

[0058] The pretreatment is mixing titanium slag, water and sulfuric acid; the mass ratio of water and titanium slag in the pretreatment is 2.5:1; the end point of the pretreatment is that the slurry pH value is 4;

[0059] The temperature of the first acid treatment is 70°C; the time of the first acid treatment is 100min; the mass ratio of titanium slag to the first acid (sulfuric acid) in the first acid treatment is ...

Embodiment 2

[0065] This embodiment provides a treatment method for improving the effect of solid-liquid separation after acid leaching treatment of titanium slag. The treatment method includes the following steps: pretreatment, solid-liquid separation, first acid treatment, second acid treatment and stirring of titanium slag in sequence Treat and stand still, and then obtain titanium-containing liquid through solid-liquid separation;

[0066] The titanium slag includes: 30% silicon dioxide, 8% aluminum oxide, 40% titanium oxide and impurity elements Fe, Ca, Mg, Al and Si;

[0067] The pretreatment is mixing titanium slag, water and hydrochloric acid; the mass ratio of water and titanium slag in the pretreatment is 2:1; the end point of the pretreatment is that the slurry pH value is 6;

[0068] The temperature of the first acid treatment is 80°C; the time of the first acid treatment is 30min; the mass ratio of titanium slag to the first acid (sulfuric acid) in the first acid treatment is ...

Embodiment 3

[0074] This embodiment provides a treatment method for improving the effect of solid-liquid separation after acid leaching treatment of titanium slag. The treatment method includes the following steps: pretreatment, solid-liquid separation, first acid treatment, second acid treatment and stirring of titanium slag in sequence Treat and stand still, and then obtain titanium-containing liquid through solid-liquid separation;

[0075]The titanium slag includes: 20% silicon dioxide, 12% aluminum oxide, 42% titanium oxide and impurity elements Fe, Ca, Mg, Al and Si;

[0076] The pretreatment is mixing titanium slag, water and acid (nitric acid); the mass ratio of water and titanium slag in the pretreatment is 3:1; the end point of the pretreatment is that the pH value of the slurry is 7;

[0077] The temperature of the first acid treatment is 60°C; the time of the first acid treatment is 180min; the mass ratio of titanium slag to the first acid (nitric acid) in the first acid treatm...

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Abstract

The invention relates to a treatment method for improving the solid-liquid separation effect after titanium slag acid leaching treatment. The treatment method comprises the following steps of sequentially carrying out pretreatment, solid-liquid separation, first acid treatment, second acid treatment, stirring treatment and standing on titanium slag, and then carrying out solid-liquid separation to obtain a titanium-containing solution. According to the treatment method for improving the solid-liquid separation effect after the titanium slag acid leaching treatment, a specific treatment process is adopted for titanium slag, so that the solid-liquid separation efficiency of treated slurry is obviously improved, and the solid-liquid separation time is obviously shortened under the condition that the equivalent separation liquid amount is achieved.

Description

technical field [0001] The invention relates to the field of material treatment, in particular to a treatment method for improving the solid-liquid separation effect of titanium slag after acid leaching treatment. Background technique [0002] At present, titanium resources mainly exist in vanadium-titanium magnetite, and vanadium-titanium magnetite raw ore can be processed to obtain ilmenite and vanadium-titanium magnetite concentrate. Among them, ilmenite can be used as raw materials for some titanium products such as sulfuric acid titanium dioxide and artificial rutile; while iron concentrate is mainly used for ironmaking, and the process flow is blast furnace-converter and non-blast furnace. Blast furnace-converter process is long, titanium is CaTiO 3 The blast furnace slag cannot be used and stored in large quantities, causing waste of resources and easy to cause environmental problems; the non-blast furnace method has poor economy and high energy consumption, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B34/12
CPCC22B7/04C22B7/007C22B34/124Y02P10/20
Inventor 李晓霞刘亚辉孟凡成王丽娜陈德胜赵宏欣甄玉兰
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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