Thread Content
Sintering safety production technology 1) Production characteristics Sintering involves combining iron-containing waste materials with concentrate powder to form agglomerates that are used as raw materials for iron production. The process involves, in accordance with the requirements of iron production, mixing fine iron-containing raw materials with fluxes and fuels; after balling, ignition, and combustion, the resulting product is crushed, screened, cooled, and granulated before being sent to the iron plant. 2) Safety technologies for sintering production and accident prevention measures (1) Transport of iron ore concentrate. Iron ore concentrate is the main raw material for sintering production. During the processing in the concentrator, it often contains large pieces and other impurities, which can cause blockages and belt tears during conveyance by conveyor belts; in some cases, these impurities even end up in the feeding disk, leading to blockages at the discharge outlet. Personal injury accidents are likely to occur during handling. To avoid the above accidents, conveyor belts must be equipped with complete safety facilities that ensure flexibility and reliability, and automated control should be implemented. 3) Unsafe factors present in the main equipment and protective measures (1) Exhaust fans. Whether the exhaust fan operates properly is directly related to the quality of the sintered ore. The safety issue with exhaust fans is the problem of vibration that occurs due to the unbalanced rotation of the rotor. To address this issue, a balancing test should be conducted on the impeller before replacing it with a new one ； Improve dust removal efficiency and enhance the operating conditions of fans ； Properly lengthen and thicken the gas collection pipes to reduce the flow velocity of exhaust gases and dust within them, thereby increasing the rate of dust settlement. At the same time, strengthen the inspection and maintenance of the secondary dust collector. (2) Belt sintering machine. The safety hazard associated with belt sintering machines is that these machines are large and long in size, which can lead to accidents among production and maintenance workers due to communication errors. As the length of the sintering machine increases, the deviation of the car also becomes more severe ； Due to changes in high temperature, overheating and \"collapse\" can occur easily. Therefore, necessary communication signals should be established for starting and stopping the sintering machine, along with appropriate protection devices. (3) Car dumper. Due to a communication error between the turntable operator and the driver, the carriages could not be aligned with the platform cars before being turned over, resulting in damage to the platform cars and the rotating frame ； Workers handling accidents are prone to hand crushes and foot injuries. 4) Dust removal and noise control (1) Dust control in sintering plants. During the sintering process, large amounts of dust, exhaust gases, and wastewater are generated, containing harmful substances such as sulfur, aluminum, zinc, fluorine, vanadium, titanium, carbon monoxide, and silica, which severely pollute the environment. Therefore, ventilation and dust removal should be carried out. Dust removal in sintering machines generally employs two stages: dust collection in the first-stage dust collection pipes and further dust removal in the second-stage dust collectors. Large sintering plants mostly use multi-tube types, while small and medium-sized sintering plants often use cyclone dust collectors in addition to multi-tube types. (2) Noise control in sintering plants. The noise in sintering plants mainly comes from high-speed operating equipment. These devices mainly include main fans, cooling fans, ventilation and dust removal machines, vibrating screens, hammer crushers, four-roll crushers, etc. To control noise, it is necessary to improve and regulate the noise generated by the equipment itself; this involves using optimal equipment designs with sound-absorbing, sound-insulating, and seismic-resistant features that meet acoustic requirements, selecting high-quality materials, and improving the quality of manufacturing. For equipment whose noise level exceeds the allowable limits, comprehensive measures need to be taken