CN109724431B

CN109724431B - Slurry cooler

Info

Publication number: CN109724431B
Application number: CN201910010066.1A
Authority: CN
Inventors: 陶静; 陶旭
Original assignee: Mintal Group Ferrochrome Science And Technology Co ltd
Current assignee: Mintal Group Ferrochrome Science And Technology Co ltd
Priority date: 2019-01-06
Filing date: 2019-01-06
Publication date: 2021-07-02
Anticipated expiration: 2039-01-06
Also published as: CN109724431A

Abstract

The invention provides a slurry cooler, comprising: a cooling chamber and a distributing chamber; wherein the cooling chamber is provided with a feed pipe which extends into the cooling chamber from the side wall of the cooling chamber; wherein the bottom of the cooling chamber is communicated with the material distribution chamber; the inner cavity of the material distribution chamber is sequentially provided with at least two layers of inclined plate layers from top to bottom, and an air inlet is arranged below the material distribution chamber; each inclined plate layer comprises a plurality of inclined plates with matched shapes, the inclined directions of the inclined plates of two adjacent inclined plate layers are opposite, and each inclined plate layer comprises a plurality of inclined plates which are arranged in parallel. Above-mentioned scheme has proposed a mud cooler, can utilize multilayer slope sheet layer to realize carrying out the heat exchange with the cooling gas in the air intake in order to realize the cooling to mud, and the ore of this kind of structure can improve the holistic life of equipment with the cooler.

Description

Slurry cooler

Technical Field

The invention relates to the technical field of machinery, in particular to a slurry cooler for performing pretreatment during slurry filtration in a pellet production process.

Background

Pellet ore is an important raw material widely used in the fields of iron making and ferroalloy production, and has the following advantages: high grade, low slag-iron ratio, low fuel ratio, high efficiency, low energy consumption and good environmental benefit. The grinding and filtering are an important process in the production process of pellet ore, and only mineral materials with preset fineness and proper water content can produce green pellets with moderate granularity and good strength on a pelletizer, so that the qualified green pellets are sent to a roasting process.

In the existing short-flow pellet production line, concentrate is wet-milled by using an overflow ball mill, and the slurry temperature is 60-70 ℃; the mixture is stirred and sent to a ceramic filter to filter out water and then enters a pelletizing procedure. Since the feed temperature of the ceramic filter cannot be higher than 50 ℃, the slurry produced by the ball mill must be cooled to below 45 ℃.

The conventional slurry coolers in the prior art all comprise a cooling chamber, a nozzle for spraying slurry is arranged above the cooling chamber, an air inlet is formed in the bottom of the cooling chamber, and an axial flow fan is arranged at the top of the cooling chamber. When the slurry is sprayed into the cooling chamber through the nozzle, air is introduced from an air inlet below the cooling chamber; so that the slurry and the air flow move in opposite directions to cool the slurry. However, in practical use, it has been found that the slurry tends to clog in the flow-through section, so that it is necessary to provide a removable section for cleaning in the flow-through section; however, due to the high flow rate, the removable section must be made of 304 stainless steel, which results in a maximum service life of the flow section of only about 2 years.

Disclosure of Invention

Aiming at the problem that the service life of the overflowing part of the existing slurry cooler is short, the embodiment of the invention provides the slurry cooler which can prolong the service life of equipment on the premise of not losing the cooling effect of an ore.

In order to solve the above problem, an embodiment of the present invention provides a slurry cooler, including: a cooling chamber and a distributing chamber; wherein the cooling chamber is provided with a feed pipe which extends into the cooling chamber from the side wall of the cooling chamber; wherein the bottom of the cooling chamber is communicated with the material distribution chamber; the inner cavity of the material distribution chamber is sequentially provided with at least two layers of inclined plate layers from top to bottom, and an air inlet is arranged below the material distribution chamber; each inclined plate layer comprises a plurality of inclined plates with matched shapes, the inclined directions of the inclined plates of two adjacent inclined plate layers are opposite, and each inclined plate layer comprises a plurality of inclined plates which are arranged in parallel.

Furthermore, the cloth chamber is provided with two inclined plate layers, and the two inclined plate layers are sequentially arranged along the vertical direction.

Further, the shape of the inner cavity of the cooling chamber is matched with that of the inner cavity of the material distribution chamber so that the cooling chamber and the material distribution chamber are fixed together in an airtight mode.

Further, the feeding pipe comprises a feeding main pipe and a branch pipe, wherein the feeding main pipe extends into the cooling chamber from the side wall of the cooling chamber; the feeding main pipe extends into the partial connecting branch pipe in the cooling chamber, the branch pipe extends along the direction perpendicular to the axial direction of the feeding main pipe, one end of the branch pipe is communicated with the feeding main pipe, and the other end of the branch pipe extends out of the cooling chamber from the inner wall of the cooling chamber.

Furthermore, the partial both sides that the feed header stretched into in the cooling chamber all are connected with many branch pipes, and extend parallel to each other between many branch pipes of each side, just be equipped with the opening that is used for making mud outflow on the diapire of each branch pipe.

The device further comprises a material collector, wherein the material collector is in a disc shape with the inner diameter matched with the material distribution chamber, and the material collector is arranged below the inclined plate layer at the bottommost layer and is used for collecting the slurry which passes through the inclined plate layer at the upper part.

Furthermore, the bottom of the distribution chamber is provided with a material collector, wherein the material collector is in a disc shape with the inner diameter matched with that of the distribution chamber, and the material collector is arranged below the inclined plate layer at the bottommost layer and is used for collecting slurry which passes through the inclined plate layer at the upper part.

Furthermore, a slurry outlet is formed in the bottom of the distributing chamber and connected with a slurry stirring device.

The technical scheme of the invention has the following advantages: above-mentioned scheme has proposed a mud cooler, can utilize multilayer slope sheet layer to realize carrying out the heat exchange with the cooling gas in the air intake in order to realize the cooling to mud, and the ore of this kind of structure can improve the holistic life of equipment with the cooler.

Drawings

FIG. 1 is a schematic longitudinal cross-sectional structural view of a mud cooler in accordance with an embodiment of the present invention;

fig. 2 is a schematic top view of a feeding pipe according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

An embodiment of the present invention provides a mud cooler as shown in fig. 1, which includes: a cooling chamber 2 and a material distribution chamber 3; wherein the cooling chamber 2 is provided with a feed pipe 4, the feed pipe 4 extends into the cooling chamber 2 from the side wall of the cooling chamber 2; wherein the bottom of the cooling chamber 2 is communicated with the material distribution chamber 3; wherein the inner cavity of the material distribution chamber 3 is sequentially provided with at least two layers of inclined plate layers from top to bottom, and an air inlet is arranged below the material distribution chamber 3; each inclined plate layer comprises a plurality of inclined plates with matched shapes, the inclined directions of the inclined plates of two adjacent inclined plate layers are opposite, and each inclined plate layer comprises a plurality of inclined plates which are arranged in parallel. The cloth chamber 3 is provided with two inclined plate layers (an inclined plate layer 5 and an inclined plate layer 6), and the inclined plate layer 5 and the inclined plate layer 6 are sequentially arranged along the vertical direction. The shape of the inner cavity of the cooling chamber 2 is matched with the shape of the inner cavity of the material distribution chamber 3 so as to hermetically fix the cooling chamber 2 and the material distribution chamber 3 together. The feeding pipe 4 comprises a feeding main pipe 41 and branch pipes 42, wherein the feeding main pipe 41 extends into the cooling chamber 2 from the side wall of the cooling chamber 2; the part of the feeding manifold 41 extending into the cooling chamber 2 is connected with a branch pipe 42, the branch pipe 42 extends along a direction perpendicular to the axial direction of the feeding manifold 41, one end of the branch pipe 42 is communicated with the feeding manifold 41, and the other end extends out of the cooling chamber 2 from the inner wall of the cooling chamber 2. The two sides of the part of the feeding header pipe 41 extending into the cooling chamber 2 are connected with a plurality of branch pipes 42, the plurality of branch pipes 42 on each side extend in parallel, and an opening for allowing slurry to flow out is arranged on the bottom wall of each branch pipe 42. As shown in fig. 1, it further comprises a collector 7, wherein the collector 7 is a disc with an inner diameter adapted to the distribution chamber 3, and the collector 7 is arranged below the lowermost inclined plate layer and is used for collecting slurry which has passed through the upper inclined plate layer. And a slurry outlet 8 is formed in the bottom of the material distribution chamber 3, and the slurry outlet 8 is connected with a slurry stirring device.

As shown in fig. 1, after being conveyed from the feeding pipe to the distributing chamber, the slurry passes through two inclined plate layers with opposite inclined directions; wherein, an upper inclined plate layer 5 is arranged below the inclined plate layer, and the upper inclined plate layer 5 consists of a plurality of rubber lining plates with the same interval and the same inclination angle; the lower inclined plate layer 6 is arranged below the upper inclined plate layer 5, and the lower inclined plate layer 6 has the same structure with the upper inclined plate layer 5 except that the inclined angles are opposite. A collector 7 is arranged below the lower inclined plate layer 6 to collect the cooled slurry to prevent splashing. Wherein a shutter type air inlet is arranged below the material distribution chamber. The hot slurry is uniformly dropped into two layers of inclined plate layers through the feeding pipe and the distributing device to form a film shape, and the heat exchange is carried out with the cold air sucked by the axial flow fan in a reverse flow mode. Thus, the slurry can enter the slurry stirring device at the lower part through the material collector after being cooled, and the slurry is pumped into the ceramic filter for filtering after being stirred.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention as set forth in the following claims.

Claims

1. A mud cooler, comprising: a cooling chamber and a distributing chamber;

wherein the cooling chamber is provided with a feed pipe which extends into the cooling chamber from the side wall of the cooling chamber; wherein the bottom of the cooling chamber is communicated with the material distribution chamber; the inner cavity of the material distribution chamber is sequentially provided with at least two layers of inclined plate layers from top to bottom, and an air inlet is arranged below the material distribution chamber; each inclined plate layer comprises a plurality of inclined plates with matched shapes, the inclined directions of the inclined plates of two adjacent inclined plate layers are opposite, and each inclined plate layer comprises a plurality of inclined plates which are arranged in parallel; the inclined plates of two adjacent inclined plate layers have the same inclination angle and opposite inclination directions; the two inclined plate layers are arranged along the vertical direction, and the inclined plate layer positioned above the inclined plate layer is composed of rubber lining plates with the same spacing and consistent inclination angle;

the feeding pipe comprises a feeding main pipe and a branch pipe, and the feeding main pipe extends into the cooling chamber from the side wall of the cooling chamber; the part of the feeding main pipe extending into the cooling chamber is connected with a branch pipe, the branch pipe extends along the direction perpendicular to the axial direction of the feeding main pipe, one end of the branch pipe is communicated with the feeding main pipe, and the other end of the branch pipe extends out of the cooling chamber from the inner wall of the cooling chamber; wherein the partial both sides that the feed header stretched into in the cooling chamber all are connected with many branch pipes, and extend parallel to each other between many branch pipes of each side, just be equipped with the opening that is used for making mud outflow on the diapire of each branch pipe.

2. The mud cooler of claim 1, wherein the distribution chamber is provided with two inclined plate layers, and the two inclined plate layers are arranged in sequence in a vertical direction.

3. A mud cooler according to claim 1, wherein the cooling chamber has an internal cavity shaped to fit within the internal cavity of the distribution chamber to provide an air-tight fit between the cooling chamber and the distribution chamber.

4. The mud cooler of claim 1, further comprising a collector, wherein the collector is in the shape of a disc having an inner diameter adapted to the distribution chamber, and the collector is disposed below the lowermost inclined floor for mud that has passed through the upper inclined floor.

5. The mud cooler of claim 1, further comprising a collector disposed at the bottom of the distribution chamber, wherein the collector is in the shape of a disc having an inner diameter corresponding to the distribution chamber, and the collector is disposed below the lowermost inclined floor and is filled with the mud that has passed through the upper inclined floor.

6. The mud cooler of claim 1, wherein the distribution chamber is provided with a mud outlet at a bottom thereof, the mud outlet being connected to a mud stirring device.