JP2996637B2 - Automatic sampling method and apparatus for granulated slag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a flash smelting furnace (furnace).
The present invention relates to a granulated slag automatic sampling method and a device for quickly analyzing the components of granulated slag produced by rapidly cooling slag generated in a metal refining process of copper or the like by seawater or the like.

[0002]

2. Description of the Related Art An example of a copper refining process will be described. First, a ore is melted in a flash smelting furnace (furnace furnace) to separate slag (entanglement) and a mat (Matte,
The molten glue is charged into a converter (rotary furnace) in a molten state, and air is blown into it to oxidize it to separate iron, which is an impurity, as slag. % Or more blisters. Furthermore, this blister is cast into a plate-shaped anode by a cast copper machine,
In the next step, the electrorefining plant, electrolysis and deposition are performed to produce high-quality electrolytic copper.

[0003] The slag extracted in the flash smelting furnace is solidified and crushed by rapid cooling with a large amount of seawater or the like to become granulated slag, sent to a collection facility via a bucket elevator and a belt conveyor, and re-used as various raw materials. Used. During this time, an operator receives the discharged granulated slag in a container at regular intervals, for example, every three hours, at the exit side of the flash furnace, such as the exit side of a bucket elevator, withdraws an appropriate amount of the granulated slag, and performs washing and filtration to remove salt. After drying, pulverizing, and analyzing the components in the analyzer, the operation of the flash smelting furnace is controlled. However, satisfactory operation management cannot be performed by the conventional method, and it is necessary to increase the frequency of analysis of granulated slag in order to strengthen furnace condition management, and automation of sampling has been desired.

[0004]

DISCLOSURE OF THE INVENTION The present invention solves the above problems and automates the sampling of the granulated slag at the discharge side of the flash smelting furnace and shortens the required time. And to realize the device.

[0005]

SUMMARY OF THE INVENTION The present invention provides a sampler unit which takes a sample and converts it into a slurry above a belt conveyor for conveying granulated slag, and a sampler unit for analyzing the components of granulated slag. A drying and collecting unit for collecting the granulated slag by drying the slurry, and a sample elevator disposed between the lower part of the analyzing chamber and the analyzing chamber, and transferring the slurry between the sampler unit and the drying and collecting unit. This is an automatic sampling method of granulated slag on the discharge side of the flash smelting furnace, and the present invention scoops up a part of the slag conveyed on the belt conveyor by a sampler unit, and rinses the scooped up slag with water to obtain a slurry. In this condition, the slurry is transported to the drying and recovery unit by the feed tube, and the sent slurry is stored in the drying and recovery unit. This is an automatic sampling method for granulated slag, which is carried out in a sampler, dried with warm air, dropped into a sample receiver of a sample elevator, and carried up to the analysis room above the sample receiver by the sample elevator. .

[0006] The present invention also provides a sampler unit disposed above a belt conveyor for conveying granulated slag, a drying and collecting unit disposed below the analysis chamber for analyzing components of the granulated slag, and a lower part of the analysis chamber. An automatic sampler for granulated slag on the discharge side of the flash smelting furnace, comprising a sample elevator disposed between the sampler unit and the analysis chamber, and a feed tube connecting the sampler unit and the drying and recovery unit. Wherein the sampler unit is
The tip of two rotating arms having two fulcrums separated by a predetermined distance is connected to a sampling spoon in which the lower end of a strip-shaped metal plate is bent in a hook shape at the same distance as the two fulcrums. It comprises a rotating link, a rotating mechanism for rotating the rotating link, a spray box into which the lower end of the sampling spoon is inserted with the rotation of the rotating link, and a spray nozzle for injecting fresh water toward the lower end of the sampling spoon in the spray box. It is preferable that the drying and collecting unit is a net-like funnel that is arranged on a substantially straight line, a hot-air dryer, and a mesh that is attached to the sample elevator and moves laterally through three positions of a funnel that moves up and down by the sample elevator. And a reversing mechanism for inverting the strainer up and down. Arbitrariness.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, a sampler unit is disposed on a slag conveyor, and a drying and recovery unit is disposed immediately below an analysis chamber. Complete automation of slag sampling and reduction of required time can be achieved.

[0008] Further, the conventional washing step can be omitted by washing the sample in the sampler unit and subsequently transferring the slurry with fresh water.

[0009]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an entire configuration of an automatic sampling device for granulated slag of this embodiment. 1 is a belt conveyor for conveying slag, 2 is a sampler unit, 3 is a feed tube,
Reference numeral 4 denotes a drying recovery unit, 5 denotes a sample elevator, and 6 denotes an analysis room.

That is, in the present invention, the sampler unit 2 is disposed above the belt conveyor 1 for conveying the granulated slag on the exit side of the flash furnace, and a part of the conveyed slag is scooped, and the scooped slag is washed off with water. And transported to the drying and collecting unit 4 disposed in the lower part of the analysis chamber 6 where the components of the granulated slag are analyzed in the slurry state together with the water by the feed tube 3, and the sent slurry is received by the strainer of the drying and collecting unit 4. After drying with hot air,
The sample is dropped on the sample receiver of the sample elevator 5 disposed between the lower part of the analysis room and the analysis room, and the sample receiver is carried by the sample elevator 5 into the analysis room 6 located above the sample receiver.

FIG. 2 is a front view showing the vicinity of a delivery position of the belt conveyor 1, the sampler unit 2, and the feeding tube 3,
FIG. 3 is a side view of the same, 21 is a sampling spoon in the sampler unit 2, and 22 is a sampling spoon 21.
, A rotating mechanism for rotating the rotating link 22, a spray box 24 provided at a position outside the belt conveyor 1, 25
Is a spray nozzle attached to the side of the spray box 24, and 26 is a cover covering the entire sampler unit 2.

The sampling spoon 21 is formed by bending a lower end of a strip-shaped metal plate into a hook shape, and a predetermined amount, for example, 50 grams of granulated slag can be scooped at the bent portion. The rotating link 22 is formed by connecting the tips of two rotating arms having two fulcrums separated by a predetermined distance to the sampling spoon 21 at the same distance as the two fulcrums.
23 allows the sampling spoon 21 to be translated in the same vertical posture. Therefore, when the granulated slag sample picked up from the belt conveyor 1 is carried into the spray box 24 on the side of the conveyor and fresh water is sprayed from the spray nozzle 25, the granulated slag is washed out and enters the feed tube 3, and the height difference is caused. It flows to the position of the drying and collecting unit 4 without using power. Granulated slag that is coagulated and crushed by seawater has conventionally required washing with water at the time of analysis.However, in the present invention, washing is performed at the stage of the injection of fresh water and the transportation of slurry, so it is necessary to perform washing again. Absent.

FIG. 4 is a plan view showing the vicinity of the delivery position of the feeding tube 3, the drying and recovery unit 4, and the sample elevator 5,
FIG. 5 is a front view, FIG. 6 is a side view, 41 is a mesh strainer for receiving the slurry sent from the end of the feed tube 3, 42 is a funnel-shaped water receiver provided at the lower part thereof, and 43 is An overflow tank provided thereunder, 44 is a traverse mechanism for laterally moving the strainer 41, 45
Is a reversing mechanism for reversing the strainer 41 up and down, 46 is a hot air dryer, 47 is a fine slag tray provided at the lower part of the frame of the drying and collecting unit 4, 48 is a container (fine slag tray) inserted further below the same, Reference numeral 51 denotes a funnel that moves up and down by the sample elevator 5, and 52 denotes a sample receiver attached to a lower part of the funnel 51.

In the drying and recovery unit 4, a strainer 41 is attached to the tip of a rotating protruding arm, and the strainer 41 moves laterally to three positions in the left and right directions in FIGS. In the left position, feed tube 3
When the strainer 41 is in this position, only the solid content of the discharged slurry, i.e., the granulated slag, remains on the strainer 41, and the water is transferred to the water receiver under the strainer 41.
42, collected through the overflow tank 43.

Next, when the strainer 41 moves to the center position, the granulated slag is dried by the warm air of the warm air dryer 46. When the moisture has been removed by drying for a predetermined time, the strainer 41 is moved laterally to the right position. Here, if the arm is rotated 180 degrees by the reversing mechanism 45, the granulated slag in the strainer 41 is put into the sample receiver 52 through the funnel 51 waiting below.

FIG. 7 is a partial front view showing the vicinity of the top of the sample elevator 5, and 53 is a lifting mechanism of the sample elevator 5. The elevating mechanism 53 is, for example, a wire rope or a combination of a chain and a geared motor, a hoisting winch, or the like. The sample receiver 52 is carried by the sample elevator 5 to the height of the analysis room 6, and the analysis can be started immediately.

According to the present invention, the process from the collection of the sample to the start of the analysis is fully automatic and requires no human work, and the time required during this period is about 30 minutes. As a result of the reduction in half, sampling can be performed every hour, and action can be taken promptly with the flash furnace, reducing Cu loss in the slag. Along with this, the variation in Cu grade in the mat was reduced from 2.0% to 1.5%.

[0018]

According to the present invention, since the automation of sampling and the reduction of time are achieved, fine furnace condition control becomes possible, and an excellent effect that Cu loss in slag can be reduced is achieved.

[Brief description of the drawings]

FIG. 1 is a front view showing an entire configuration of an automatic sampling device according to an embodiment of the present invention.

FIG. 2 is a front view showing the vicinity of a sampler unit according to the present invention.

FIG. 3 is a side view showing the vicinity of a sampler unit according to the present invention.

FIG. 4 is a plan view showing the vicinity of a drying and collecting unit according to the present invention.

FIG. 5 is a front view showing the vicinity of a drying and collecting unit according to the present invention.

FIG. 6 is a side view showing the vicinity of a drying and collecting unit according to the present invention.

FIG. 7 is a partial front view showing the vicinity of a sample elevator top according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Belt conveyor 2 Sampler unit 3 Feeding tube 4 Drying and collecting unit 5 Sample elevator 6 Analysis room 21 Sampling spoon 22 Rotating link 23 Rotating mechanism 24 Spray box 25 Spray nozzle 26 Cover 41 Strainer 42 Water receiver 43 Overflow tank 44 Lateral feeding mechanism 45 Reversing mechanism 46 Hot air dryer 47 Fine slag tray 48 Container (fine slag tray) 51 Funnel 52 Sample holder 53 Elevating mechanism

Claims (5)

(57) [Claims] 1. A sampler unit for collecting a sample above a belt conveyor for conveying granulated slag and converting the sample to a slurry, and drying the slurry in a lower part of an analysis chamber for analyzing a component of the granulated slag. A water collecting unit, and a sample elevator is arranged between the lower part of the analysis chamber and the analysis chamber, and the slurry is automatically transported between the sampler unit and the drying and recovery unit. Sampling method. 2. A part of the slag conveyed on the belt conveyor is scooped up by a sampler unit, the scooped-up slag is washed off with water, and the slag is transported in a slurry state to a drying / recovery unit by a feed tube, and the slurry is sent. After receiving with the strainer of the drying and recovery unit and drying with hot air, drop it to the sample receiver of the sample elevator,
2. The method for automatically sampling granulated slag according to claim 1, wherein the sample receiver is carried up to an analysis chamber located above the sample receiver by a sample elevator. 3. A sampler unit (2) disposed above a belt conveyor (1) for conveying granulated slag;
A drying and recovery unit (4) disposed below the analysis chamber (6) for analyzing the components of the granulated slag, a sample elevator (5) disposed between the lower part of the analysis chamber and the analysis chamber, and the sampler unit ( An automatic sampling device for granulated slag, comprising a feed tube (3) connecting between 2) and a drying and collecting unit (4). 4. The sampler unit (2) has a tip of two rotating arms having two fulcrums separated by a predetermined distance at the same distance as the two fulcrums at the lower end of a strip-shaped metal plate. A rotating link (22) connected to a sampling spoon (21) bent in a hook shape, a rotating mechanism (23) for rotating this, and a lower end of the sampling spoon (21) as the rotating link (22) rotates. 4. A spray box (24) into which spray water is inserted, and a spray nozzle (25) for spraying fresh water toward a lower end of a sampling spoon (21) in the spray box (24). Automatic sampling device for granulated slag. 5. A sample elevator (5) wherein said drying and collecting unit (4) is attached to a funnel-shaped water receiver (42), a hot air dryer (46), and a sample elevator (5) which are arranged on a substantially straight line. 3) funnel (51) ascending and descending by 5)
A net-like strainer (41) that moves laterally between two positions, a lateral feed mechanism (44) of the strainer (41), and a reversing mechanism (45) for reversing the strainer (41) up and down. The automatic sampling device for granulated slag according to claim 3 or 4.