CN-224207873-U - Mixed acid system

CN224207873UCN 224207873 UCN224207873 UCN 224207873UCN-224207873-U

Abstract

The application provides an acid mixing system, which relates to the technical field of chemical industry and comprises a first acid mixing machine, a first stirring mechanism, a second acid mixing machine, a second stirring mechanism and an acidification kiln, wherein the first acid mixing machine is provided with a first feed inlet, a first acid feed inlet and a first discharge outlet, a roasting material and concentrated sulfuric acid are mixed in the first acid mixing machine to obtain a primary mixed material, the first acid mixing machine is internally provided with a second feed inlet, a second acid feed inlet and a second discharge outlet, the second discharge outlet is connected with an inlet of the acidification kiln, and the second acid mixing machine is internally provided with the second stirring mechanism. Through the arrangement of the first acid mixer and the second acid mixer, on one hand, two-stage mixing is realized, a final-stage mixed material with better mixing effect can be obtained, and on the other hand, concentrated sulfuric acid can be added into the acid mixing system for two times, the adding amount of the concentrated sulfuric acid is more controllable, and the fault tolerance rate is higher.

Inventors

JIANG JIANWEN
DENG LI
LIU XIN

Assignees

四川能投鼎盛锂业有限公司

Dates

Publication Date: 20260508
Application Date: 20250528

Claims (10)

1. A mixed acid system, comprising: The first acid mixer is provided with a first feed inlet, a first acid inlet and a first discharge outlet; the first feeding port is used for adding roasting materials, the first acid inlet is used for adding concentrated sulfuric acid, the roasting materials and the concentrated sulfuric acid are mixed in the first acid mixing machine to obtain primary mixed materials, and the first discharging port is used for discharging the primary mixed materials; a first stirring mechanism is arranged in the first acid mixing machine and is used for mixing the roasting material and the concentrated sulfuric acid to obtain the primary mixed material; The second acid mixing machine is provided with a second feed inlet, a second acid inlet and a second discharge outlet, the second feed inlet is connected with the first discharge outlet, the second acid inlet is used for adding concentrated sulfuric acid, the primary mixed material and the concentrated sulfuric acid are mixed in the second acid mixing machine to obtain a final mixed material, the second discharge outlet is connected with an inlet of the acidification kiln, a second stirring mechanism is arranged in the second acid mixing machine, and the second stirring mechanism is used for mixing the primary mixed material and the concentrated sulfuric acid to obtain the final mixed material.
2. The acid mixing system of claim 1, wherein the first acid mixer is of a horizontal configuration and/or the second acid mixer is of a horizontal configuration.
3. The acid mixing system of claim 2, wherein the second stirring mechanism comprises a second stirring screw.
4. A mixed acid system according to claim 3, wherein two of said second stirring screws are disposed within said second acid mixer.
5. The acid mixing system of claim 2, wherein the first stirring mechanism comprises a first stirring screw.
6. The acid mixing system of claim 5, wherein a circumferential edge of the first stirring screw is disposed proximate an inner wall of the first acid mixer.
7. The acid mixing system according to claim 5 or 6, wherein a striking mechanism is provided outside the first acid mixer, and the striking mechanism intermittently strikes on an outer wall of the first acid mixer.
8. The acid mixing system of claim 7, wherein the striking mechanism comprises: The support plate is arranged at the top of the first acid mixing machine; And one end of the striking hammer is rotationally connected with the support plate, and the other end of the striking hammer can intermittently strike the outer wall of the first acid mixing machine.
9. The acid mixing system of claim 8, wherein the striking mechanism further comprises: The support rod is vertically arranged at the top of the first acid mixing machine; the lifting rod is transversely arranged and vertically connected with the supporting rod in a sliding manner; And the sliding sleeve is in sliding connection with the lifting rod, and one end of the striking hammer extends and is rotationally connected with the sliding sleeve.
10. The acid mixing system of claim 9, wherein the striking mechanism further comprises: A sector gear mounted to the drive end of the first stirring screw; One end of the toothed plate is connected with the lifting rod, and one side of the toothed plate can be in clearance engagement with the sector gear; And the spring is used for enabling the lifting rod to move upwards and reset.

Description

Mixed acid system Technical Field The utility model relates to the technical field of chemical industry, in particular to an acid mixing system. Background The acid mixer and the acidification kiln are used for mixing the lithium concentrate roasting material and concentrated sulfuric acid and roasting the material in an acidification reaction. The acid mixer mixes concentrated sulfuric acid and roasting material and then enters an acidification kiln, and acidification reaction is carried out under the condition of heating to 250 ℃, namely, useful components in the roasting material and the concentrated sulfuric acid are subjected to chemical reaction to generate soluble lithium sulfate, and one core influencing factor for controlling the progress of the acidification reaction is whether the mixed material is uniform or not. At present, a primary mixed acid is adopted in the acid mixer, concentrated sulfuric acid and roasting materials are insufficiently mixed in the acid mixer, and uniformly mixed materials are difficult to obtain, so that the reaction effect of the mixed materials in an acidification kiln is affected. Disclosure of utility model In view of the foregoing, the present utility model provides an acid mixing system that addresses at least one of the shortcomings identified in the background art above. In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a mixed acid system, comprising: The first acid mixer is provided with a first feed inlet, a first acid inlet and a first discharge outlet; the first feed inlet is used for adding roasting materials, the first acid inlet is used for adding concentrated sulfuric acid, the roasting materials and the concentrated sulfuric acid are mixed in the first acid mixing machine to obtain primary mixed materials, and the first discharge outlet is used for discharging the primary mixed materials; a first stirring mechanism is arranged in the first acid mixing machine and is used for mixing the roasting material and the concentrated sulfuric acid to obtain the primary mixed material; The second acid mixing machine is provided with a second feed inlet, a second acid inlet and a second discharge outlet, the second feed inlet is connected with the first discharge outlet, the second acid inlet is used for adding concentrated sulfuric acid, the primary mixed material and the concentrated sulfuric acid are mixed in the second acid mixing machine to obtain a final mixed material, the second discharge outlet is connected with an inlet of the acidification kiln, a second stirring mechanism is arranged in the second acid mixing machine, and the second stirring mechanism is used for mixing the primary mixed material and the concentrated sulfuric acid to obtain the final mixed material. In some embodiments of the utility model, the first acid mixer is of a horizontal configuration and/or the second acid mixer is of a horizontal configuration. In some embodiments of the utility model, the second stirring mechanism comprises a second stirring screw. In some embodiments of the utility model, two second stirring screws are disposed within the second acid mixer. In some embodiments of the utility model, the first stirring mechanism comprises a first stirring screw. In some embodiments of the utility model, the circumferential edge of the first stirring screw is disposed proximate to an inner wall of the first acid mixer. In some embodiments of the utility model, a striking mechanism is arranged outside the first acid mixer, and the striking mechanism intermittently strikes on the outer wall of the first acid mixer. In some embodiments of the utility model, the striking mechanism comprises: the support plate is arranged at the top of the first acid mixing machine; One end of the striking hammer is rotationally connected with the support plate, and the other end of the striking hammer can intermittently strike the outer wall of the first acid mixing machine. In some embodiments of the utility model, the striking mechanism further comprises: the support rod is vertically arranged at the top of the first acid mixing machine; the lifting rod is transversely arranged and vertically connected with the supporting rod in a sliding manner; And the sliding sleeve is in sliding connection with the lifting rod, and one end of the striking hammer is connected with the sliding sleeve in a rotating way after extending. In some embodiments of the utility model, the striking mechanism further comprises: The sector gear is arranged at the driving end of the first stirring screw; One end of the toothed plate is connected with the lifting rod, and one side of the toothed plate can be in clearance engagement with the sector gear; and the spring is used for enabling the lifting rod to move upwards and reset. The embodiment of the utility model has at least the following advantages or beneficial effects: Through the a