The Mystery and Charm of the Pulverized Coal Lance.

In the process of steel production, the remarkable application of the PQ-type pulverized coal lance highlights its powerful role. This lance features a simple structure, convenient operation, and is specifically designed for use in conjunction with a ball valve. It plays an indispensable role in the ironmaking blast furnace.

I. In-Depth Interpretation of Process Characteristics

The lance body, crafted from 2520 heat-resistant steel, is not only robust and durable but also possesses high-temperature resistance. Even more impressive is the advanced "partial ceramic lining inside the steel pipe" technology used in the lance. This technology not only enhances the lance's service life but also plays a critical role in the pulverized coal injection process.

II. Showcasing the Advantages of Usage Characteristics

The longevity of this lance is astonishing. Its low replacement rate significantly reduces the labor intensity for workers, while the stability of the lance position effectively decreases the number of blast furnace shutdowns, thereby improving production efficiency. More importantly, it can steadily increase the amount of coal injection, achieving large-scale injection, which undoubtedly provides strong support for reducing ironmaking costs. Additionally, its repairability extends the overall service life of the lance, making this investment even more valuable.

The PQ-2000 blast furnace pulverized coal lance is like a dancer in the ironmaking industry, gracefully performing within the blast furnace. It is ingeniously composed of components such as the lance tube, lance head sleeve, multi-hole lance head, and lance head cap, each playing a crucial role. Particularly noteworthy is the multi-hole lance head, where uniformly distributed circular holes cleverly divide the coal powder airflow into several fine streams. These streams rapidly mix with the blast furnace's hot air, ensuring full combustion of the coal powder and greatly improving its utilization rate.

In practical operation, this lance, like a skilled dancer, is gently inserted into the furnace body from the end with a bayonet to begin its work. When the blast furnace requires coal injection, it swiftly and accurately sprays the coal powder to meet production demands. When coal injection is paused, the ball in the ball valve automatically resets, preventing the high-temperature gas inside the furnace from leaking and ensuring production safety.

Although the PQ-type pulverized coal lance boasts high reliability and stability, we must remain vigilant in the face of unexpected incidents. While its working principle and structure are complex, regular inspection and maintenance are key to ensuring its normal operation. This is akin to carefully tending to a dancer; only when every component is in optimal condition can it continue to showcase its unique charm within the blast furnace.

In summary, with its unique process characteristics and excellent usage features, the PQ-type pulverized coal lance brings tremendous convenience and benefits to the ironmaking industry. It is not only a capable assistant to the blast furnace but also a reliable tool in our pursuit of safe production.