Ultimate cost reduction · raw material factory

All along, the company has been actively implementing the group's cost reduction and efficiency requirements, establishing the idea of "tight days", taking "quality improvement" as the starting point, digging deep and fine management. The majority of cadres and workers either improve the production process to reduce the loss of raw materials, or optimize the operation process to improve the quality of products, and gather the great power with the practical actions of bit by bit to escort the successful completion of the production and management goals and tasks.

Hebei Xinda Iron and Steel Group Co., Ltd. raw material factory is a firm practitioner of this concept, they uphold the determination of "all costs can be reduced, all costs must be reduced", and actively promote management cost reduction and all staff cost reduction action. In every detail of daily work, carefully calculate, dig every possible cost reduction space, and strive to achieve the ultimate cost reduction state. Recently, the raw material factory through the statistics of the round-trip ore rate, found that the self-return rate is between 16%-18%, indicating that its overall strength is reduced, increasing the operating cost, so reducing the sinter self-return rate has become a topic for them to conduct in-depth exploration and research.

If you want to achieve cost reduction and efficiency, having a realistic cost reduction plan is the first successful step. In the process of research, the team members actively participated, they gave full play to the advantages of solid theoretical knowledge and rich field experience, broke down the reasons for the high sinter self-return rate one by one, and refined them into detailed suspicious factors. After self-screening inspection, on-site inspection observation, material level observation, moisture detection record, screening particle size inspection and other means to eliminate, the final impact of the sinter self-return rate is determined to be serious air leakage, grate blocking, fabric structure is poor, aging sieve equipment four main reasons.

The research team found the right direction and went the right way, so that the crux of the problem was solved. In view of the serious problem of air leakage of the equipment, daily inspection of air leakage points and treatment at any time, including the daily tightening of the box plate screws and the pressure pin screws of the grating, the water seal zipper, the treatment of electric dust leakage, etc., and the air leakage points of the bellows are blocked and repaired during the maintenance, so as to effectively reduce the air leakage.

In view of the problem of clogged grate, the grate cleaning system was formulated, 5 carts were cleaned per shift to ensure the transparency of grate bars, stabilize the production rhythm, strictly control the quality of warehouse materials, strictly implement the backloading and clearance system, and control the low position of the silo in each shift to prevent unstable conditions caused by sticky materials and reduce the deterioration of burning caused by moisture fluctuations. It causes the grate to be blocked and ensures the permeability of the grate.

To solve the problem of poor fabric structure, the sticky material on both sides of the nine-roll distributor should be cleaned regularly in each shift. Stabilize the moisture of the mixture and prevent the water fluctuation from causing the furrow and pressing of the material surface; Extend about 5 cm on both sides of the flattener to ensure that there is no shortage of material on the edge, and adopt a U-shaped fabric mode to reduce the edge effect, and require the sinter monitor to check the sinter surface every hour and feedback the material surface effect. Through the above measures, there is no furrow on the material surface, no material at the edge, and the material surface is blue.

In view of the aging problem of vibrating screen equipment, the vibrating screen plate is checked, repaired and replaced by maintenance time, which reduces the qualified products entering the self-return material and reduces the self-return rate.

Through the implementation of the above measures, compared with the improvement before, the sinter self-return rate of the raw material plant decreased by 2.69%, and the reduction of the self-return rate reduced the number of reverses correspondingly, and improved the quality of the sinter in the furnace.

The wise man changes with time, and the wise man changes with time. In the protracted war of reducing cost and increasing efficiency, Xinda people are keenly aware of opportunities and brave enough to break through difficulties. Looking back on the past, expenditure "throttling" multi-pronged, cost reduction and improvement everywhere; Looking forward to the new journey, we must continue to work intensively, keep the cost bottom line with ingenuity, expand the benefit ceiling with innovation, and make cost reduction and efficiency become the strong wings of enterprise take-off!