Titanium slag recovery system

Abstract

The utility model relates to a titanium slag recovery system which comprises a plate-and-frame filter press (2), a filtrate storage tank (3) and a slurry storage tank (5), a filtrate pipe (L1) at the bottom of the plate-and-frame filter press (2) is connected into the filtrate storage tank (3), a filter residue pipe (L2) at the bottom of the plate-and-frame filter press (2) is connected into the slurry storage tank (5), an outlet in the lower part of the slurry storage tank (5) is connected into the filter (6) through the filter residue dissolved solution delivery pump (B2), an outlet in the bottom of the filter (6) is connected into the titaniferous solution storage tank (7), and an outlet of the titaniferous solution storage tank (7) enters a post-treatment process through the small-degree water delivery pump (B3). The system is reasonable in design and convenient to operate, filter cloth washing liquid enters filter residues to be dissolved and used, and recycling of production water is achieved; and filter residues are dissolved and filtered, and titanium resources are recycled.

Description

Technical Field

[0001] The utility model belongs to the field of titanium dioxide by-product recovery production, and particularly relates to a titanium slag recovery system. Background Art

[0002] The sulfuric acid process produces titanium dioxide, yielding 3.5-4.0 tons of ferrous sulfate heptahydrate per ton of titanium dioxide. Test results indicate that the titanium dioxide byproduct contains approximately 1%-2% titanium. Purification of the byproduct requires titanium removal. The specific titanium removal process involves dissolving the titanium dioxide byproduct, adjusting the solution pH, and maintaining the solution at a low temperature before performing solid-liquid separation. The filter residue after separation is treated as solid waste, resulting in economic losses of this titanium. Furthermore, the filter residue is often colloidal, requiring large amounts of water for cleaning, resulting in significant water consumption. Therefore, in practical production, recycling the filter residue and filter cloth wash liquid to reduce resource consumption is a pressing issue. Summary of the Invention

[0003] The purpose of the utility model is to avoid the deficiencies of the prior art and provide a titanium slag recovery system.

[0004] To achieve the above-mentioned purpose, the technical solution of the utility model is: a titanium slag recovery system, including a plate and frame filter press, a filtrate storage tank, and a mud storage tank, characterized in that: the filtrate pipe at the bottom of the plate and frame filter press is connected to the filtrate storage tank, the filter residue pipe at the bottom of the plate and frame filter press is connected to the mud storage tank, the lower outlet of the mud storage tank is connected to the filter through a filter residue dissolving liquid delivery pump, the bottom outlet of the filter is connected to a titanium liquid storage tank, and the outlet of the titanium liquid storage tank enters the post-processing process through a small water delivery pump.

[0005] It also includes a cloth washing system: the water outlet of the pure water storage tank is connected to the plate and frame filter press through a washing water delivery pump, and the filter cloth washing liquid enters the mud storage tank through the filter residue pipe.

[0006] The mud storage tank is also connected to a dilute acid pipe for dissolving filter residue, the dilute acid pipe is connected to the outlet of the acid storage tank, and a control valve is provided on the dilute acid pipe.

[0007] A control valve is provided on the filtrate pipe.

[0008] The mud storage tank is provided with an agitator; the filtrate storage tank, the acid storage tank, the mud storage tank and the titanium liquid storage tank are all provided with liquid level gauges.

[0009] The beneficial effects of the utility model are: reasonable design, convenient operation, filter cloth washing liquid is put into filter residue for dissolution and use, so as to realize production water recycling; and the filter residue is dissolved and filtered to realize titanium resource recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the utility model;

[0011] In the figure: 1-pure water storage tank, 2-plate and frame filter press, 3-filtrate storage tank, 4-acid storage tank, 5-mud storage tank, 6-filter, 7-titanium liquid storage tank; L1-filtrate pipe, L2-filter residue pipe, L3-dilute acid pipe; B1-wash water delivery pump, B2-filter residue solution delivery pump, B3-low-grade water delivery pump. DETAILED DESCRIPTION

[0012] See Figure 1 A titanium slag recovery system includes a plate and frame filter press 2, a filtrate storage tank 3, and a mud storage tank 5, and is characterized in that the filtrate pipe L1 at the bottom of the plate and frame filter press 2 is connected to the filtrate storage tank 3, the filter residue pipe L2 at the bottom of the plate and frame filter press 2 is connected to the mud storage tank 5, the lower outlet of the mud storage tank 5 is connected to the filter 6 through the filter residue dissolving liquid delivery pump B2, the bottom outlet of the filter 6 is connected to the titanium liquid storage tank 7, and the outlet of the titanium liquid storage tank 7 enters the post-processing process through the small water delivery pump B3.

[0013] It also includes a cloth washing system: the water outlet of the pure water storage tank 1 is connected to the plate and frame filter press 2 through the washing water delivery pump B1, and the filter cloth washing liquid enters the mud storage tank 5 through the filter residue pipe L2.

[0014] The mud storage tank 5 is also connected to a dilute acid pipe L3 for dissolving the filter residue. The dilute acid pipe L3 is connected to the outlet of the acid storage tank 4 and is provided with a control valve.

[0015] The filtrate pipe L1 is provided with a control valve.

[0016] The mud storage tank 5 is provided with an agitator; the filtrate storage tank 3, the acid liquid storage tank 4, the mud storage tank 5 and the titanium liquid storage tank 7 are all provided with liquid level gauges.

[0017] The specific working process is as follows: After the ferrous solution is filtered through the plate and frame filter press 2, the filtrate enters the filtrate storage tank 3 through the filtrate pipe L1. A small amount of acid in the acid storage tank 4 is controlled by the control valve to enter the mud storage tank 5 through the dilute acid pipe L3. The plate and frame filter press 1 discharges the filter residue into the mud storage tank 5 through the filter residue pipe L2. The wash water delivery pump B1 is turned on to pump water from the pure water storage tank 1 into the plate and frame filter press 2 to clean the filter cloth. The wash water enters the mud storage tank 5 through the filter residue pipe L2. The stirring is turned on, and the wash water and acid dissolve the active ingredients in the mud. The filter residue solution is then delivered to the filter 6 through the filter residue dissolving liquid delivery pump B2 to filter out insoluble impurities. The filtered solution can be used as low-density water to enter the titanium liquid storage tank 7. Finally, it enters the post-processing process through the low-density water delivery pump B3.

Claims

1. A titanium slag recovery system, comprising a plate and frame filter press (2), a filtrate storage tank (3), and a slurry storage tank (5), characterized in that: The filtrate pipe (L1) at the bottom of the plate and frame filter press (2) is connected to the filtrate storage tank (3), the filter residue pipe (L2) at the bottom of the plate and frame filter press (2) is connected to the mud storage tank (5), the lower outlet of the mud storage tank (5) is connected to the filter (6) through the filter residue dissolving liquid delivery pump (B2), the bottom outlet of the filter (6) is connected to the titanium liquid storage tank (7), and the outlet of the titanium liquid storage tank (7) enters the post-processing process through the small-scale water delivery pump (B3).

2. A titanium slag recovery system according to claim 1, characterized in that: It also includes a cloth washing system: the water outlet of the pure water storage tank (1) is connected to the plate and frame filter press (2) through a washing water delivery pump (B1), and the filter cloth washing liquid enters the mud storage tank (5) through a filter residue pipe (L2).

3. A titanium slag recovery system according to claim 1, characterized in that: The slurry storage tank (5) is also connected to a dilute acid pipe (L3) for dissolving filter residue. The dilute acid pipe (L3) is connected to the outlet of the acid storage tank (4). A control valve is provided on the dilute acid pipe (L3).

4. A titanium slag recovery system according to claim 1, characterized in that: The filtrate pipe (L1) is provided with a control valve.

5. A titanium slag recovery system according to any one of claims 1 to 4, characterized in that: The mud storage tank (5) is provided with a stirrer; and the filtrate storage tank (3), the acid liquid storage tank (4), the mud storage tank (5) and the titanium liquid storage tank (7) are all provided with liquid level gauges.

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