electrode consumption
The production process of electrode consumption
Electrode consumption uses calcined anthracite, calcined petroleum coke, pitch, coke dust, graphite powder, carbon powder and return materials as raw materials. The raw materials are crushed, sieved, and proportioned to produce electrode consumption.
(1) Raw material storage and transportation
The main raw materials used in production are calcined anthracite, calcined petroleum coke, and other raw materials that are transported from the silo to the storage silo by a belt conveyor, and are conveyed by an electromagnetic vibrating feeder installed under the silo through a belt when the material is used The machine is transported to the manufacturing process of electrode consumption.
(2) Processing of returned materials [that is, waste electrode consumption]
Electrode consumption fragments, unqualified materials and products produced during the production process are returned to the processing system, where they are coarsely crushed to the following particle size by a crusher, and then crushed and sieved to a particle size below 20mm by an impact crusher Then, it is directly sent to the silo for use by the bucket elevator. The raw crushed material enters the kneading section.
(3) Preparation of liquid asphalt
The solid medium-temperature asphalt transported by car is crushed by a jaw crusher [can also be crushed by other methods], sent into the asphalt melting tank, and indirectly heated and melted with high temperature heat transfer oil, [if it is liquid asphalt, it can be directly added to the asphalt melting tank] to melt After the bitumen is filtered by a filter to remove impurities, it enters the liquid bitumen receiving tank, and then is sent to the bitumen insulation storage tank by a transfer pump, and when used, it is transported by the bitumen transfer pump to the electrode consumption workshop for ingredients.
(4) Manufacturing of electrode consumption
Electrode consumption manufacturing includes production processes such as medium crushing and screening, grinding, batching, kneading and forming and cooling.
①Medium crushing and screening
This project is equipped with a medium crushing and screening system for calcined anthracite. The calcined anthracite is fed by an electromagnetic vibrating feeder, and sent to a double-layer horizontal vibrating screen and a single-layer horizontal vibrating screen via a belt conveyor and a bucket elevator. The materials are screened and processed. The particle size is greater than 10mm. Return to the intermediate bin, and then feed the material from the electromagnetic vibrating feeder into the double-roll crusher. Sieving again after medium crushing. 10～6mm, 6～3mm granularity materials can directly enter the corresponding batching bin, or return to the double-roll crusher to be finely crushed to below 3mm, which is convenient for flexible production adjustment. [The calcined petroleum coke can also enter the crushing system]
There are 3 kinds of granular materials, 10～6mm, 6～3mm, 3～0mm, 6～3mm, 3～0mm. In addition to directly entering the batching bin, some of them are sent to the mill to pulverize into powder.
After being crushed to a particle size of less than 20mm in two stages in the processing section, the raw scraps are transported directly into the raw scrap silo by belt conveyors and bucket elevators for use.
②Grinding
In order to ensure the compactness of electrode consumption products, a certain proportion of powder (about 45%) needs to be added to fill the gap between the pellets during the production of electrode consumption. The main source of the powder is the calcined anthracite dust, calcined petroleum coke and coke dust collected by the dust collection system and is pulverized into powder by the mill.
Grinding uses pendulum mill [or Raymond mill]. The electromagnetic vibrating feeder is quantitatively fed into the pendulum mill. After the dust-containing gas from the mill is sorted by the air separator, the coarse particle material is separated and returned to the mill for regrind. After being collected by the cyclone receiver, it is sent to the powder batching bin, and the circulating air enters the mill through the ventilator for circulating production. The excess wind generated during the grinding process is purified and discharged into the atmosphere.
In addition to the powder used for ingredients, part of the powder is used as an adsorbent for the asphalt flue gas during the kneading and molding process, and used for the adsorption treatment of the asphalt flue gas. After adsorbing the asphalt flue gas, it directly enters the mixing and kneading section.
③ Ingredients, kneading, uniform temperature, forming cooling
The coke particles, powder, and residual particles are respectively weighed by the feeder and hopper scale at the bottom of the respective batching bins according to the formula requirements, and then transferred to the review scale. The screw conveyor will transport the prepared raw materials to the upper heating pot of the preheating kneader for heating. After the mixture is heated to 170-180℃ for 30~, the hot mixture, raw scraps, and liquid binder asphalt are added to the kneading pot at the lower layer of the preheated kneader for kneading. The liquid asphalt is measured with an electronic funnel scale and reduced量法. The whole batching process is automatically controlled by a microcomputer.
The mixing and kneading use a double-stirring, double-heating 2000-liter preheating kneader. Each time, 2 tons of paste can be kneaded, and the kneading cycle is 40-50 minutes. The kneaded paste is discharged into the movable bottom paste box, and is sent to the paste uniform temperature box by the electric flatbed trolley and the bridge crane for uniform temperature treatment.
Paste molding uses a fixed desktop chain type paste molding machine. When using materials, the paste in the uniform temperature box is directly fed into the weighing hopper of the forming machine for measurement, and then into the chain forming machine. After molding, it enters the chain cooling conveyor for cooling, and the cooled electrode consumption is transported to the electrode consumption warehouse by the roller conveyor for storage. Unqualified electrode consumption is sent to the refill processing system with a forklift.
The electrode consumption production line adopts PLC automatic control, and can also be controlled manually.
Electrode consumption uses calcined anthracite, calcined petroleum coke, pitch, coke dust, graphite powder, carbon powder and return materials as raw materials. The raw materials are crushed, sieved, and proportioned to produce electrode consumption.
(1) Raw material storage and transportation
The main raw materials used in production are calcined anthracite, calcined petroleum coke, and other raw materials that are transported from the silo to the storage silo by a belt conveyor, and are conveyed by an electromagnetic vibrating feeder installed under the silo through a belt when the material is used The machine is transported to the manufacturing process of electrode consumption.
(2) Processing of returned materials [that is, waste electrode consumption]
Electrode consumption fragments, unqualified materials and products produced during the production process are returned to the processing system, where they are coarsely crushed to the following particle size by a crusher, and then crushed and sieved to a particle size below 20mm by an impact crusher Then, it is directly sent to the silo for use by the bucket elevator. The raw material enters the mixing section.
(3) Preparation of liquid asphalt
The solid medium-temperature asphalt transported by car is crushed by a jaw crusher [can also be crushed by other methods], sent into the asphalt melting tank, and indirectly heated and melted with high temperature heat transfer oil, [if it is liquid asphalt, it can be directly added to the asphalt melting tank] to melt After the bitumen is filtered by a filter to remove impurities, it enters the liquid bitumen receiving tank, and then is sent to the bitumen insulation storage tank by a transfer pump, and when used, it is transported by the bitumen transfer pump to the electrode consumption workshop for ingredients.
(4) Manufacturing of electrode consumption
Electrode consumption manufacturing includes production processes such as medium crushing and screening, grinding, batching, kneading and forming and cooling.
①Medium crushing and screening
This project is equipped with a medium crushing and screening system for calcined anthracite. The calcined anthracite is fed by an electromagnetic vibrating feeder, and sent to a double-layer horizontal vibrating screen and a single-layer horizontal vibrating screen via a belt conveyor and a bucket elevator. The materials are screened and processed. The particle size is greater than 10mm. Return to the intermediate bin, and then feed the material from the electromagnetic vibrating feeder into the double-roll crusher. Sieving again after medium crushing. 10～6mm, 6～3mm granularity materials can directly enter the corresponding batching bin, or return to the double-roll crusher to be finely crushed to below 3mm, which is convenient for flexible production adjustment. [The calcined petroleum coke can also enter the crushing system]
There are 3 kinds of granular materials, 10～6mm, 6～3mm, 3～0mm, 6～3mm, 3～0mm. In addition to directly entering the batching bin, some of them are sent to the mill to pulverize into powder.
After being crushed to a particle size of less than 20mm in two stages in the processing section, the raw scraps are transported directly into the raw scrap silo by belt conveyors and bucket elevators for use.
②Grinding
In order to ensure the compactness of electrode consumption products, a certain proportion of powder (about 45%) needs to be added to fill the gap between the pellets during the production of electrode consumption. The main source of the powder is the calcined anthracite dust, calcined petroleum coke and coke dust collected by the dust collection system and is pulverized into powder by the mill.
Grinding uses pendulum mill [or Raymond mill]. The electromagnetic vibrating feeder is quantitatively fed into the pendulum mill. After the dust-containing gas from the mill is sorted by the air separator, the coarse particle material is separated and returned to the mill for regrind. After being collected by the cyclone receiver, it is sent to the powder batching bin, and the circulating air enters the mill through the ventilator for circulating production. The excess wind generated during the grinding process is purified and discharged into the atmosphere.
In addition to the powder used for ingredients, part of the powder is used as an adsorbent for the asphalt flue gas during the kneading and molding process, and used for the adsorption treatment of the asphalt flue gas. After adsorbing the asphalt flue gas, it directly enters the kneading section.
③ Ingredients, kneading, uniform temperature, forming cooling
Coke particles, powder, and residual particles are respectively weighed by the feeder and hopper scale at the bottom of the respective batching bins according to the formula requirements, and then transferred to the review scale. The screw conveyor will transport the prepared raw materials to the upper heating pot of the preheating kneader for heating. After the mixture is heated to 170-180℃ for 30~, the hot mixture, raw scraps, and liquid binder asphalt are added to the kneading pot at the lower layer of the preheated kneader for kneading. The liquid asphalt is measured with an electronic funnel scale and reduced量法. The whole batching process is automatically controlled by a microcomputer.
The mixing and kneading use a double-stirring, double-heating 2000-liter preheating kneader. Each time, 2 tons of paste can be kneaded, and the kneading cycle is 40-50 minutes. The kneaded paste is discharged into the movable bottom paste box, and is sent to the paste uniform temperature box by the electric flatbed trolley and the bridge crane for uniform temperature treatment.
Paste molding uses a fixed desktop chain type paste molding machine. When using materials, the paste in the uniform temperature box is directly fed into the weighing hopper of the forming machine for measurement, and then into the chain forming machine. After molding, it enters the chain cooling conveyor for cooling, and the cooled electrode consumption is transported to the electrode consumption warehouse by the roller conveyor for storage. Unqualified electrode consumption is sent to the refill processing system with a forklift.
The electrode consumption production line adopts PLC automatic control, and can also be controlled manually.