Premixer for acid and ore

A premixing and acid ore technology, applied in the field of premixing devices and acid ore premixing devices, can solve the problems of unstable quality of titanium liquid, inability to disperse, short premixing time, etc., to ensure continuous contact time, guarantee Stability, the effect of ensuring accuracy

Active Publication Date: 2017-05-24
CHONGQING TITANIUM IND OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: ① In order to prevent the chemical reaction between titanium concentrate and concentrated sulfuric acid in the premixing tank, the premixing time is short, and the material mixing is insufficient, resulting in low acidolysis efficiency, and the acidolysis rate can only generally be maintained at 96.5%. ~97.5%; ②The measurement of titanium concentrate is difficult to be accurate, and the fluctuation between batches is large, resulting in unstable quality of titanium liquid after acid hydrolysis of the final titanium concentrate; ③The addition of titanium concentrate is relatively fast, and it cannot be quickly It disperses, causing concentrated sulfuric acid to absorb the moisture of titanium concentrate to form hard lumps, and the inner wall of the premixing tank is seriously scaled

Method used

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  • Premixer for acid and ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Open the frozen brine inlet and outlet valves of the premix tank to ensure that the outlet temperature of the frozen brine is lower than 8°C. Turn on the stirring motor of the premix tank, and the rotating speed is set to 45r / min. Turn on the concentrated sulfuric acid feed pump, and set the feed flow to 1.59m according to the process requirements 3 / h. Turn on the titanium concentrate conveying belt, then open the titanium concentrate silo valve, and adjust the feeding amount of titanium concentrate to 0.85m according to the process requirements 3 / h. The premixed material enters the reaction feed tank and is pumped to the acidolysis reactor, and the acidolysis rate of the acidolysis reaction is 98.24%.

Embodiment 2

[0025] Open the frozen brine inlet and outlet valves of the premix tank to ensure that the outlet temperature of the frozen brine is lower than 8°C. Turn on the stirring motor of the premixing tank, and the rotating speed is set to 60r / min. Turn on the concentrated sulfuric acid feed pump, and set the feed flow rate to 3.44m according to the process requirements 3 / h. Turn on the titanium concentrate conveying belt, then open the titanium concentrate silo valve, and adjust the feeding amount of titanium concentrate to 1.7m according to the process requirements 3 / h. The premixed material enters the reaction feed tank and is pumped to the acidolysis reactor, and the acidolysis rate of the acidolysis reaction is 98.75%.

Embodiment 3

[0027] Open the frozen brine inlet and outlet valves of the premix tank to ensure that the outlet temperature of the frozen brine is lower than 8°C. Turn on the stirring motor of the premixing tank, and the rotating speed is set to 70r / min. Turn on the concentrated sulfuric acid feed pump, and set the feed flow rate to 5.12m according to the process requirements 3 / h. Turn on the titanium concentrate conveying belt, then open the titanium concentrate silo valve, and adjust the feeding amount of titanium concentrate to 2.55m according to the process requirements 3 / h. The premixed material enters the reaction feeding tank and is pumped to the acidolysis reactor, and the acidolysis rate of the acidolysis reaction is 99.10%.

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Abstract

The invention discloses a premixer for acid and ore, which belongs to the technical field of the design and manufacturing of metallurgical material production equipment. The provided premixer has the advantages of sufficient premixing and accurate premixing input amount. The premixer comprises a material input system, a concentrated sulphuric acid input system, and a continuous acid-ore premixing and output system, an ore input port and an acid liquor input port are respectively arranged at the head end of the continuous acid-ore premixing and output system, and a premixed material output port is arranged at the tail end of the continuous acid-ore premixing and output system; the material input system and the concentrated sulphuric acid input system respectively communicate with the continuous acid-ore premixing and output system via the ore input port and the acid liquor input port; and ore and concentrated sulphuric acid which need to be premixed are respectively and simultaneously inputted into the continuous acid-ore premixing and output system by the material input system and the concentrated sulphuric acid input system according to set speeds, continuously uniformly mixed and continuously outputted from the premixed material output port.

Description

technical field [0001] The invention relates to a premixing device, in particular to a premixing device for acid ore, and belongs to the technical field of design and manufacture of metallurgical raw material production equipment. Background technique [0002] The mixing of solid materials and liquid materials is a common chemical production unit in the chemical industry. In the production of titanium dioxide by sulfuric acid method, the premixing of concentrated sulfuric acid and titanium concentrate is also an important link in the acid hydrolysis process of titanium concentrate. Its purpose is to use concentrated sulfuric acid to wet the titanium concentrate, mix it well, enter the acidolysis reactor, and carry out the acidolysis reaction under the trigger of water or waste acid. At present, the acid ore intermittent premixing method is generally used in the production of sulfuric acid titanium dioxide. In the premixing tank with stirring and jacket cooling, a certain amo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F7/08B01F15/02B01F15/04B01F15/06B01F3/12C01G23/053
CPCC01G23/0532B01F23/53B01F27/72B01F35/2202B01F35/221422B01F35/2215B01F35/75455B01F35/88B01F2035/98B01F35/92B01F2101/2204
Inventor 陈新红刘勇彭文韬谭志刚张剑淦文军吴艳
Owner CHONGQING TITANIUM IND OF PANGANG GROUP
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