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Method for treating ferrotitanium material hydrochloric acid lixivium

A hydrochloric acid leaching and leaching technology, which is applied in the field of hydrometallurgy, can solve the problem of large amount of incineration

Inactive Publication Date: 2017-06-06
有研资源环境技术研究院(北京)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0028] The purpose of the present invention is to provide a treatment method for the leachate in the ferro-titanium material leaching process, so as to solve the problem that during the hydrochloric acid leaching process of the ferro-titanium material, the amount of incineration of the leached mother liquor is too much, and the energy consumption of incineration accounts for 65-75% of the whole process left and right questions

Method used

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  • Method for treating ferrotitanium material hydrochloric acid lixivium
  • Method for treating ferrotitanium material hydrochloric acid lixivium
  • Method for treating ferrotitanium material hydrochloric acid lixivium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Embodiment 1 Conventional titanium concentrate hydrochloric acid pressure leaching and leaching mother liquor full incineration treatment (see figure 1 )

[0090] 1. Add 8 tons of titanium concentrate to the leaching ball with a diameter of 4.3 meters. The main components of the titanium concentrate are shown in Table 7.

[0091] The main chemical composition (%) of table 7 embodiment 1 raw material titanium concentrate

[0092] Al 2 o 3

CaO TF MgO SiO 2

TiO 2

V 2 o 5

0.91 1.12 32.55 4.01 3.58 46.12 0.1

[0093] 2. Pump 26.4 meters 3 The leaching solution containing 18% dilute hydrochloric acid is poured into leaching balls with a diameter of 4.3 meters, and preheated to 95°C. The total impurities such as Fe, Ca and Mg in the leach solution are less than 10g / L.

[0094] 3. After feeding 3 tons of steam at 140°C, react for 4 hours.

[0095] 4. Release the leached material and cool down to 70°C.

[0096] 5. ...

Embodiment 2

[0102] Embodiment 2 titanium concentrate hydrochloric acid pressure leaching and leaching mother liquor split flow incineration treatment (see figure 2 )

[0103] 8 tons of titanium concentrate are added to the leaching ball with a diameter of 4.3 meters. The main components of the titanium concentrate are shown in Table 8.

[0104] Pump 26.4 meters 3 The leaching solution containing 18% hydrochloric acid and soluble chloride salts is poured into leaching balls with a diameter of 4.3 meters and preheated to 95°C. The main components of the leaching solution ⑦ are shown in Table 9.

[0105] The main chemical composition (g / L) of table 9 embodiment 2 leach solution ⑦

[0106] Al 3+

Ca 2+

TF Mg 2+

HCl 0.42 0.65 38.60 2.81 195

[0107] 3. After feeding 3 tons of steam at 140°C, the pressure is 0.35Mpa, and react for 2 hours.

[0108] 4. Release the leached material and cool it down to 70°C by flash evaporation and air cooling.

[0...

Embodiment 3

[0116] Embodiment 3 Titanium concentrate hydrochloric acid pressure leaching and leaching mother liquor treatment of the present invention (see image 3 )

[0117] With the incineration leaching mother liquor 21.13 meters of embodiment 2 3 , The chemical composition of the incineration leaching mother liquor is shown in Table 11.

[0118] The main chemical composition of table 11 incineration leaching mother liquor (g / L)

[0119] TCl -

Volume (m 3 )

Al 3+

Ca 2+

TF Mg 2+

HCl 251.16 21.13 1.34 2.08 123.22 8.98 45

[0120] 1. Venturi pre-concentration

[0121] The exhaust gas from the incinerator passes through the cyclone dust collector and the incineration and leaching mother liquor is mixed in the Venturi to cool down and evaporate to cool. The main chemical composition of the medium-concentration incineration leaching mother liquor discharged from the Venturi is shown in Table 12.

[0122] 21.13 meters 3 18.42 mete...

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Abstract

The invention provides a method for treating ferrotitanium material hydrochloric acid lixivium. The method comprises the steps that leached mother liquor obtained through leaching of ferrotitanium materials via the hydrochloric acid lixivium is subjected to flow dividing, then incineration leaching mother liquor and circulation leaching mother liquor are obtained, and after the incineration leaching mother liquor is subjected to Venturi preconcentration and multiple-effect evaporation concentration, the incineration leaching mother liquor is incinerated through an incinerator, and hydrochloric acid is recycled for lixivium regeneration. By the adoption of the method, the defect that after the ferrotitanium materials are leached through the hydrochloric acid, the incineration amount and energy consumption in the incineration procedure are too large can be overcome, the incineration amount of the leaching mother liquid can be reduced by 26.65%, accordingly, the energy consumption of the whole technology is reduced by 18%, and good industrial application prospects are achieved.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy. In particular, the invention relates to a method for processing leachate when leaching ferro-titanium material with hydrochloric acid, in particular to a method for treating the hydrochloric acid leachate of ferro-titanium material. Background technique [0002] In my country, the research on leaching ferro-titanium materials with hydrochloric acid has a history of more than 30 years, and a variety of leaching processes have been developed, some of which are relatively mature, such as pre-oxidation-fluidized atmospheric pressure hydrochloric acid leaching, separation Metallurgical combined pressure hydrochloric acid leaching method, direct pressure hydrochloric acid leaching method and oxidation-reduction atmospheric pressure hydrochloric acid leaching method. However, until now, these processes have not been industrialized, and one of the main reasons is that the cost of treating leachate...

Claims

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Application Information

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IPC IPC(8): C22B3/22C22B3/44C22B3/10C22B34/12
CPCC22B3/10C22B3/22C22B3/44C22B34/1245C22B34/1259
Inventor 车小奎陈树忠王雷英明郑其陈松王力军
Owner 有研资源环境技术研究院(北京)有限公司
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