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Method for producing titanium-rich ore from blast furnace slag

A blast furnace slag and titanium-rich technology, applied in the field of metallurgy, can solve the problems of limited product purity and complicated process equipment, and achieve the effect of high recovery rate and good application prospects

Active Publication Date: 2019-02-22
山东产研中科高端化工产业技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the purity of the product obtained by this method is limited, and the process equipment is complicated

Method used

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  • Method for producing titanium-rich ore from blast furnace slag
  • Method for producing titanium-rich ore from blast furnace slag
  • Method for producing titanium-rich ore from blast furnace slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Take 500g TiO 2 The grade is 22.5% blast furnace slag mixed with 260g sodium hydroxide and placed in the reactor, the melting reaction temperature is controlled at 390°C, the melting reaction time is 45min, and then 120g of ammonium sulfate is evenly mixed in, and the high temperature reaction temperature is controlled at 260°C , the reaction time was 40min, and the product A was obtained.

[0050] The obtained product A is fully washed with water, the washing temperature is 30°C, and the dilute lye is removed by filtration to obtain the intermediate mineral B to be treated.

[0051] The intermediate mineral B is sorted by a rough separation by flotation. The medicament system is water glass 2500g / t, carboxymethyl cellulose (CMC) 100g / t, hydroxamic acid 700g / t, flotation agent 2# oil 20g / t t, flotation pH 6.5. The obtained crude titanium concentrate and tailings components are shown in Table 2, Example 1 Flotation Product Yield and TiO 2 grade.

[0052] Table 2 embodi...

Embodiment 2

[0060] Others are all the same as in Example 1, and the only difference is that they are selected 3 times.

[0061] The crude titanium concentrate obtained by the above flotation is subjected to 3 times of beneficiation, and the yield of concentrate, medium ore + tailings product yield and TiO 2 See Table 4 for grade details.

[0062] Table 4 Example 2 Titanium Concentrate Product Yield and TiO after 3 times of beneficiation 2 grade

[0063] product name

[0064] It can be seen from Table 3 that after three times of beneficiation, the concentrate TiO 2 The grade is increased from about 36% of rough concentrate to 67.56%, and the recovery rate is 75.28%.

Embodiment 3

[0066] Others are all the same as in Example 2, the only difference is that the crude titanium concentrate obtained after flotation is added to the melting reaction of sodium hydroxide, and ammonium sulfate is added to the high-temperature solid-phase reaction, and the melting reaction and high-temperature solid-phase reaction are the same as those in the embodiment 1 is the same, the titanium concentrate obtained after the high-temperature solid-state reaction is subjected to three times of beneficiation, and the yield of the concentrate and the tailings of the middle ore and the TiO 2 See Table 5 for grade details.

[0067] Table 5 Example 3 Titanium Concentrate Chemical Treatment After 3 Times of Product Yield and TiO 2 grade

[0068] product name

[0069] It can be seen from Table 4 that after the coarse titanium concentrate obtained by blast furnace slag flotation undergoes chemical pretreatment and three times of beneficiation, the concentrate TiO 2 The grade...

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Abstract

The invention relates to a method for preparing titanium-rich ore by means of blast furnace slag, and belongs to the metallurgical field. The method for preparing the titanium-rich ore by means of the blast furnace slag comprises the following steps that 1, the blast furnace slag and a NaOH solid are mixed to be uniform, a melting reaction is conducted for 30 min to 90 min at 380 DEG C to 590 DEG C, temperature is decreased to 250 DEG C to 280 DEG C, solid-state (NH4)2SO4 is added, all the materials are mixed to be uniform, a high-temperature solid-phase reaction is conducted for 30 min to 60 min, and then a product A is obtained; 2, A is washed clean with water of 25 DEG C to 50 DEG C, filtering is conducted, and then an intermediate mineral B is obtained; 3, the intermediate mineral B is subjected to flotation, and then rough concentrate and tailing are obtained; and 4, concentration is conducted, wherein the rough concentrate is subjected to concentration, and then concentrate and middling are obtained. According to the titanium-rich ore obtained through the method, the recycling rate is high and can reach up to 77.78%, and meanwhile the grade of TiO2 is high and can reach 77.58%.

Description

technical field [0001] The invention relates to a method for preparing titanium-rich ore by using blast furnace slag, which belongs to the field of metallurgy. Background technique [0002] The reserves of vanadium-titanium magnetite in my country's Panzhihua-Xichang area reach 5.7 billion tons, with associated TiO 2 The resource is 870 million tons, accounting for 35.02% of the world's titanium resource reserves and 90.54% of the country's total titanium resource reserves. While developing and utilizing vanadium-titanium magnetite, making full use of this titanium resource is of great importance to my country's and even the world's titanium industry meaning. [0003] TiO in Panxi Region 2 Associated with vanadium-titanium magnetite, about half of it exists in the form of free ilmenite, and about half of it coexists with magnetite in the form of ilmenite lamellae and microcrystals to form titano-magnetite. The former remains in the tailings during the magnetic separation p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03B9/04C01G23/053
CPCB03B7/00B03B9/04C01G23/053
Inventor 邹建新
Owner 山东产研中科高端化工产业技术研究院有限公司
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