coal preparation

简明释义

选煤

英英释义

例句

1.Effective coal preparation can significantly improve the efficiency of power plants.

有效的煤炭准备可以显著提高发电厂的效率。

2.Training workers on coal preparation techniques is crucial for operational success.

对工人进行煤炭准备技术培训对运营成功至关重要。

3.During coal preparation, impurities such as sulfur and ash are removed to enhance quality.

在煤炭准备过程中，诸如硫和灰分等杂质被去除，以提高质量。

4.The process of coal preparation involves cleaning and sizing the coal before it is shipped to customers.

煤炭准备的过程涉及在煤炭运送给客户之前进行清洗和分级。

5.The company invested in new technology for coal preparation to reduce environmental impact.

该公司投资于新技术以进行煤炭准备，以减少对环境的影响。

作文

The process of coal preparation is crucial in the coal mining industry. It involves several steps that enhance the quality and efficiency of coal before it is transported to the market. Coal preparation (煤炭准备) aims to remove impurities such as ash, sulfur, and moisture, which can significantly affect the combustion properties of coal. By improving the quality of coal, we can ensure that it burns more efficiently and produces less pollution when used as a fuel source.One of the first steps in coal preparation (煤炭准备) is the crushing of mined coal. This process breaks down large chunks of coal into smaller, more manageable pieces. After crushing, the coal is screened to separate different sizes. The larger particles can be further processed, while the smaller ones may be suitable for direct use or require additional treatment.Next, the coal undergoes washing, which is a critical aspect of coal preparation (煤炭准备). Washing removes a significant portion of the impurities. In this stage, water and chemicals are used to separate the clean coal from the waste materials, such as rock and dirt. This not only improves the quality of the coal but also reduces the environmental impact of coal mining by minimizing waste.Another important technique used in coal preparation (煤炭准备) is flotation. This method uses the differences in the surface properties of coal and impurities to separate them. In flotation, air bubbles are introduced into a mixture of water and finely crushed coal. The coal particles attach to the bubbles and rise to the surface, forming a froth that can be collected. This process is particularly effective for removing fine impurities that washing alone cannot eliminate.After these processes, the cleaned coal is dried to reduce its moisture content. Moisture can significantly decrease the heating value of coal, making it less efficient as a fuel. Therefore, drying is a vital step in coal preparation (煤炭准备), ensuring that the final product has optimal characteristics for combustion.In addition to improving the quality of coal, coal preparation (煤炭准备) also plays a significant role in enhancing safety in coal mining operations. By removing hazardous materials, such as pyrites, which can produce sulfur dioxide when burned, the overall safety of coal usage is improved. Furthermore, better-prepared coal leads to fewer emissions and a lower environmental footprint, aligning with global efforts towards sustainable energy practices.In conclusion, coal preparation (煤炭准备) is an essential process in the coal industry that not only enhances the quality of coal but also contributes to environmental sustainability and safety in coal mining. With ongoing advancements in technology, the methods used in coal preparation (煤炭准备) are becoming more efficient and environmentally friendly, paving the way for a cleaner energy future. As the world continues to seek alternatives to fossil fuels, understanding the importance of coal preparation (煤炭准备) will remain critical in our transition towards more sustainable energy sources.

煤炭准备过程在煤矿行业中至关重要。它涉及几个步骤，以提高煤炭在运输到市场之前的质量和效率。煤炭准备旨在去除杂质，如灰分、硫和水分，这些杂质会显著影响煤的燃烧特性。通过改善煤的质量，我们可以确保它燃烧得更有效，并在作为燃料来源时产生更少的污染。在煤炭准备的第一个步骤是破碎开采的煤。这一过程将大块煤分解成更小、更易于管理的颗粒。在破碎之后，煤被筛分以分离不同的尺寸。较大的颗粒可以进一步处理，而较小的颗粒可能适合直接使用或需要额外的处理。接下来，煤经过洗涤，这是煤炭准备的一个关键方面。洗涤去除了大量的杂质。在这个阶段，使用水和化学物质分离干净的煤与废料，如岩石和泥土。这不仅提高了煤的质量，还通过最小化废物来减少煤矿开采对环境的影响。在煤炭准备中使用的另一个重要技术是浮选。这种方法利用煤和杂质之间的表面性质差异进行分离。在浮选中，空气泡被引入水和细磨煤的混合物中。煤粒附着在气泡上并上升到表面，形成可以收集的泡沫。这一过程对于去除仅靠洗涤无法消除的细小杂质特别有效。经过这些过程后，清洗过的煤被干燥以减少其水分含量。水分会显著降低煤的热值，使其作为燃料的效率降低。因此，干燥是煤炭准备中的一个重要步骤，确保最终产品具有最佳的燃烧特性。除了提高煤的质量外，煤炭准备还在提高煤矿作业的安全性方面发挥了重要作用。通过去除危险材料，例如黄铁矿，这些材料在燃烧时可能产生二氧化硫，从而提高了煤的使用安全性。此外，更好准备的煤导致更少的排放和较低的环境足迹，与全球可持续能源实践的努力保持一致。总之，煤炭准备是煤炭行业中一项重要的过程，它不仅提高了煤的质量，还促进了环境可持续性和煤矿开采的安全性。随着技术的不断进步，煤炭准备中使用的方法变得越来越高效和环保，为更清洁的能源未来铺平了道路。随着世界继续寻找替代化石燃料的方法，理解煤炭准备的重要性将在我们向更可持续的能源来源过渡中始终至关重要。