CN205575649U - Single -airscrew multislot formula phosphoric acid by wet process extraction device - Google Patents

Abstract

The utility model provides a single -airscrew multislot formula phosphoric acid by wet process extraction device, the device comprises a plurality of reactions and digestion tank, all is equipped with an agitator in every reaction, and the bottom of reaction has the pipeline to be linked together in proper order, is equipped with the import of phosphorus ore thick liquid on first reaction, is equipped with the sulphuric acid import on second, the third reaction, and the discharge gate of final reaction has the pipeline intercommunication with first digestion tank's feed inlet, adjacent digestion tank's bottom has the pipeline to communicate with each other, its characterized in that: the direction of rotation of the agitator of second and the 5th reaction is unanimous to it is opposite with the direction of rotation of other reaction agitators. The utility model discloses there is following advantage: 1. Because the direction of rotation of the second and the agitator of fourth reaction is different, the phosphorus ore thick liquid distributes more evenly, the reaction is more thorough, 2. The design of 2 layers or 3 layers paddle gives phosphorus ore thick liquid and the sufficient power of sulphuric acid misce bene, 3. Simple structure makes and simple to operate, and is with low costs, has practical value. Be applicable to phosphoric acid by wet process extraction process.

Description

A kind of single-blade multi-groove type phosphoric acid by wet process extraction equipment

Technical field

This utility model relates to phosphoric acid, particularly relates to phosphoric acid by wet process, furthermore relates to the extraction equipment in Wet-process Phosphoric Acid Production.

Background technology

It is known that during Wet-process Phosphoric Acid Production, phosphate ore pulp and sulphuric acid react in reactive tank, reactive tank slip phosphoric acid concentration is the important Con trolling index during Wet-process Phosphoric Acid Production.And current prior art also tends to pay close attention to reactive tank slip phosphoric acid concentration, it is desirable to improve ground as far as possible and improve its concentration, reach to improve the purpose of phosphoric acid quality.But it practice, the quality of phosphoric acid is restricted by factors.Wherein in reactive tank, the uniform concentration distribution degree of phosphate ore pulp is exactly a critically important factor.

At present, the Chinese patent application part relating to extraction equipment in Wet-process Phosphoric Acid Production is still few, only No. ZL962169692 " deflector-type wet phosphoric acid extracting bath ", No. 972478973 " slurry for forward phosphoric extraction reactor stirring paddle ", No. 031319351 " with the method and apparatus of 93%-98% concentrated sulphuric acid extraction Phosphate Rock acid ", No. ZL2013200440426 " phosphoric acid extraction device " etc..These technology and equipment no doubt can be used for the extraction process of Wet-process Phosphoric Acid Production, but still there is the concentration skewness of phosphate ore pulp in reactive tank, the defect that phosphoric acid quality is relatively low.

Summary of the invention

This utility model aims to provide a kind of single-blade multi-groove type phosphoric acid by wet process extraction equipment, to overcome the concentration of reactive tank phosphate ore pulp defect pockety in prior art.

The single-blade multi-groove type phosphoric acid by wet process extraction equipment that designer provides is made up of multiple reactive tanks and digestive shelf, an agitator it is equipped with in each reactive tank, the bottom of reactive tank has pipeline to be connected successively, first reactive tank is provided with phosphate ore pulp import, second, third reactive tank is provided with sulphuric acid import, and the charging aperture of the discharging opening of last reactive tank and first digestive shelf has pipeline communication；The bottom of adjacent digestive shelf has pipeline to communicate；The feature of the design is that second is consistent with the agitator direction of rotation of the 5th reactive tank, and contrary with the direction of rotation of other reactive tank agitator.

The quantity of above-mentioned reactive tank is 6, and the quantity of digestive shelf is 3.

Upper and lower 2 layers or 3 layers of stirrer paddle it are equipped with on the shaft of above-mentioned reactive tank agitator.

Above-mentioned second and the 4th reactive tank stirrer paddle use oblique leaf oar, the setting angle of described oblique leaf oar is 30 °；Other reactive tank stirrer paddle selects hinged joint oar.

Use flow process of the present utility model is: phosphate ore pulp enters from the first reactive tank, pass sequentially through each reactive tank, concentrated sulphuric acid enters from second, third reactive tank, extractive reaction is the most constantly carried out with phosphate ore pulp, when arriving last reactive tank, most of materials abstractions are basically completed, and slip enters digestive shelf and carries out last reaction, makes material fully extract complete.

This utility model have the advantage that compared with existing apparatus 1. due to second and the 4th the agitator direction of rotation of reactive tank different, phosphate ore pulp is more evenly distributed, reacts more thorough；2. the design of 2 layers or 3 layers blade gives phosphate ore pulp and the enough power of sulphuric acid mix homogeneously；3. simple in construction, makes and easy for installation, low cost, has practical value.It is applicable to phosphoric acid by wet process extraction process.

Accompanying drawing explanation

Fig. 1 is single-blade multi-groove type phosphoric acid by wet process extraction equipment structure chart of the present utility model,

Fig. 2 is stirrer paddle direction of rotation schematic diagram in each reactive tank.

In figure, 1 is reactive tank, and 2 is digestive shelf, and 3 is stirrer paddle.

Detailed description of the invention

Embodiment

Single-blade multi-groove type phosphoric acid by wet process extraction equipment such as Fig. 1 and 2, it is made up of 6 reactive tanks and 3 digestive shelfs, an agitator it is equipped with in each reactive tank, the bottom of reactive tank has pipeline to be connected successively, first reactive tank is provided with phosphate ore pulp import, second, third reactive tank is provided with sulphuric acid import, and the discharging opening of the 6th reactive tank and the charging aperture of first digestive shelf have pipeline communication；The bottom of adjacent digestive shelf has pipeline to communicate；Second is consistent with the direction of rotation of the agitator of the 5th reactive tank, and contrary with the direction of rotation of other reactive tank agitator.Upper and lower 2 layers or 3 layers of stirrer paddle it are equipped with on the shaft of reactive tank agitator.Second and the 4th reactive tank stirrer paddle use oblique leaf oar, the setting angle of oblique leaf oar is 30 °；Other reactive tank stirrer paddle selects hinged joint oar.

Claims (4)

1. a single-blade multi-groove type phosphoric acid by wet process extraction equipment, it is made up of multiple reactive tanks and digestive shelf, in each reactive tank Being equipped with an agitator, the bottom of reactive tank has pipeline to be connected successively, and first reactive tank is provided with phosphate ore pulp import, the Two, the 3rd reactive tank is provided with sulphuric acid import, and the charging aperture of the discharging opening of last reactive tank and first digestive shelf has Pipeline communication；The bottom of adjacent digestive shelf has pipeline to communicate；It is characterized in that: second and the 5th rotation of agitator of reactive tank Turn direction consistent, and contrary with the direction of rotation of other reactive tank agitator.

2. extraction equipment as claimed in claim 1, it is characterised in that the quantity of described reactive tank is 6, the quantity of digestive shelf It it is 3.

3. extraction equipment as claimed in claim 1, it is characterised in that be equipped with on the shaft of described reactive tank agitator Lower 2 layers or 3 layers of stirrer paddle.

4. extraction equipment as claimed in claim 1, it is characterised in that the stirrer paddle of described second reactive tank uses oblique leaf oar, Tiltedly the setting angle of leaf oar is 30 °；The stirrer paddle of the next reactive tank of described 3rd reactive tank is also adopted by oblique leaf oar, oblique leaf The setting angle of oar is 30 °；Other reactive tank stirrer paddle selects hinged joint oar.