How to start the sintering machine

Preparation for taking over the shift Before taking over the shift, understand the production quality of the shift, understand the supply of gas and raw materials, and clarify the production control situation of the shift Ignition temperature 1100±50℃ Check the condition of the equipment and process conditions (after taking over the shift, check the condition of the equipment and process conditions, the blast furnace gas pressure, the production of tools, etc.) of the readiness of the equipment and the process conditions. Check the condition of equipment and objects Check the equipment belonging to this position after receiving the start-up instruction, confirm that there is no error and report to the shift manager, get the shift manager, operate after permission and make records. Start-up operation 1. Introduce gas according to the gas introduction operation procedure (gas guard and safety officer will cooperate with the fire watchers to introduce gas) 2. Notify other related positions (hot ore tank, burn 2 burn 3 belt) before ignition 3. Ignite operation according to the ignition procedure, and there should be no less than two persons in the ignition. Carry out the pre-start-up inspection carefully, and carry out the start-up operation in the start-up order strictly Ignition operation 1. Before introducing gas, firstly contact the relevant department to issue a ticket for ignition. 3. Gas protection personnel should do an explosion test and ignite the gas only after passing the test. 4. Make sure that the gas valve of the igniter is closed and the gas discharge valve is opened. 5. Check whether the instruments and meters are normal. 6. Check whether the trip switches of the sintering machine, the round roller fabric, and the seven-roller fabric in each running part are reset and in the automatic position. 7. Check whether the gas pressure reaches 10,000 Pa and is lower than 4,000 Pa in time. Contact with the shift manager of the company 1. Blast furnace gas pressure shall not be lower than 4000 Pa 2. Gas main pipe pressure shall not be lower than 10000 Pa, otherwise, contact with the shift manager in time. Process control operation 1. Adjust the ignition temperature in time to ensure the normal value. 2. Adjust the speed of sintering machine in time to reasonably control the end point temperature and the temperature of the exhaust gas. 3. Ensure the thickness of the layer of material of the trolley, and take the low-water, low-carbon and thick material as the operation guideline to ensure the sinter ore particle size. 4. Observe the gas pressure of main pipe at any time. 5. Contact the mixer to adjust the water content of sintered material in time. 6. Reasonably control the FeO content of sintered ore. Adjustment method Mixing material is too wet 1. poor material distribution, automatic thinning of material layer, scaly material surface 2. igniter flame spraying, black spots on material surface after igniter 3. slightly increased negative pressure 4. uneven section at the end of the machine, loose, poor strength, darkened red fire layer 1. appropriately reduce the thickness of material layer 2. appropriately increase the ignition temperature 3. appropriately reduce the speed of the machine 4. notify the mixing and reducing the water material is too dry 1. automatic thickening of material layer, light surface of trolley material 2. automatic thickening of material layer, light surface of trolley material 2. automatic thickening of material layer, light surface of trolley material 3. notification of mixing and water reduction 2. the flame of igniter is sprayed out, there is floating ash on the material surface, easy to draw holes 3. the negative pressure is slightly increased 4. the material in the section of machine tail has a flowery face and loose structure 1. reduce the ignition temperature appropriately 2. increase the thickness of the material layer 3. reduce the speed of the machine appropriately 4. notify the first mixer to add water with high charcoal 1. prolong the red surface of the igniter 2. the negative pressure is slightly increased 3. the red layer of the section of machine tail is thick and bright with embers 4. the sintered ore is in the form of a large, thin-walled structure 5. stickiness is high 1. increase the moisture appropriately 2. increase the water content appropriately Cart 1. increase the moisture appropriately 2. reduce the thickness of the material layer appropriately 3. reduce the ignition temperature appropriately 4. increase the machine speed appropriately with low charcoal 1. the material surface out of the igniter is dark 2. the negative pressure and the temperature of the exhaust gas is slightly reduced 3. the red layer of the section at the end of the machine is thin and dark 4. the sintered ore has a loose and small pore structure 5. there is much return of ore at the end of the machine The moisture of the sintering is adjusted according to the structure of the raw material at any time, and the ignition temperature can be adjusted by using the blast furnace gas at 1000 degrees, and the key temperature is generally controlled at 300-400 degrees. Focus temperature is generally controlled between 300-450 degrees, the big flue temperature between 100-130 can be.