scrap metal

简明释义

废金属

英英释义

例句

1.He earned some extra cash by selling his old car as scrap metal.

他通过将旧车出售为废金属赚了一些额外现金。

2.The factory collects all its unused parts and sends them to be recycled as scrap metal.

工厂收集所有未使用的零件，并将它们送去回收作为废金属。

3.The local recycling center pays you for your scrap metal.

当地的回收中心会为你的废金属付钱。

4.During the renovation, we found a lot of scrap metal that could be recycled.

在装修过程中，我们发现了很多可以回收的废金属。

5.Many artists use scrap metal to create unique sculptures.

许多艺术家使用废金属来创作独特的雕塑。

作文

In today's rapidly evolving world, the concept of recycling has gained significant importance, especially when it comes to materials like scrap metal. 废金属 refers to discarded metal items that can be reprocessed and reused, playing a crucial role in sustainable development and environmental conservation. The process of recycling scrap metal not only helps reduce waste but also conserves natural resources and energy. This essay will explore the significance of scrap metal recycling, its benefits, and the various methods involved in this essential practice.Firstly, recycling scrap metal contributes significantly to reducing landfill waste. In many countries, a substantial amount of waste generated consists of metal products such as old appliances, vehicles, and construction materials. By recycling these materials, we can divert them from landfills, where they would take up space and contribute to environmental degradation. Instead, scrap metal is collected, processed, and transformed into new products, thereby minimizing the need for new raw materials.Moreover, the recycling of scrap metal has substantial economic benefits. The recycling industry creates jobs and stimulates local economies. When scrap metal is collected and sold to recycling centers, it generates revenue for both individuals and businesses. Additionally, the demand for recycled metals often leads to lower production costs for manufacturers, allowing them to offer competitive prices for their products.Another important aspect of scrap metal recycling is its positive impact on energy conservation. The process of extracting and refining new metals from ores is highly energy-intensive. In contrast, recycling scrap metal requires significantly less energy. For instance, recycling aluminum saves up to 95% of the energy required to produce new aluminum from bauxite ore. This energy savings translates to reduced greenhouse gas emissions, making recycling a vital component in the fight against climate change.The methods of recycling scrap metal vary depending on the type of metal and its condition. Common types of scrap metal include ferrous metals, such as steel and iron, and non-ferrous metals, such as copper, aluminum, and brass. Ferrous metals are typically collected from construction sites, demolished buildings, and old vehicles. Non-ferrous metals, on the other hand, are often sourced from electronic waste, plumbing fixtures, and beverage cans.Once collected, scrap metal is sorted and processed at recycling facilities. This involves shredding the metal into smaller pieces, which makes it easier to melt down and reform into new products. Advanced technologies, such as magnetic separation and eddy current separation, are employed to ensure that different types of metals are efficiently separated and recycled.In conclusion, the recycling of scrap metal is an essential practice that promotes environmental sustainability, economic growth, and energy conservation. By understanding the importance of scrap metal recycling, individuals and communities can play a vital role in reducing waste and conserving our planet's resources. As we continue to face environmental challenges, embracing recycling practices will be crucial in creating a more sustainable future for generations to come.

在当今快速发展的世界中，回收的概念变得越来越重要，尤其是对于像废金属这样的材料。废金属是指被丢弃的金属物品，这些物品可以被重新加工和再利用，在可持续发展和环境保护中发挥着至关重要的作用。回收废金属的过程不仅有助于减少废物，还能节约自然资源和能源。本文将探讨废金属回收的重要性、其好处以及这一基本实践中涉及的各种方法。首先，回收废金属对减少填埋场废物具有重要意义。在许多国家，产生的大量废物由金属产品组成，如旧电器、车辆和建筑材料。通过回收这些材料，我们可以将它们从填埋场转移开，填埋场会占用空间并导致环境退化。相反，废金属被收集、处理，并转化为新产品，从而最大限度地减少对新原材料的需求。此外，回收废金属还具有显著的经济效益。回收行业创造了就业机会并刺激了地方经济。当废金属被收集并出售给回收中心时，会为个人和企业创造收入。此外，对回收金属的需求通常会导致制造商的生产成本降低，使他们能够以竞争价格提供产品。废金属回收的另一个重要方面是其对节能的积极影响。从矿石中提取和精炼新金属的过程需要大量的能源。相比之下，回收废金属所需的能源要少得多。例如，回收铝节省了高达95%的生产新铝所需的能源。这种节能转化为减少温室气体排放，使回收成为应对气候变化斗争中的关键组成部分。回收废金属的方法因金属的类型和状态而异。常见的废金属包括黑色金属，如钢铁，和有色金属，如铜、铝和黄铜。黑色金属通常来自建筑工地、拆除建筑和旧车辆。有色金属则往往来自电子废物、管道配件和饮料罐。一旦收集到，废金属就会在回收设施进行分类和处理。这涉及将金属切割成较小的碎片，从而使其更容易熔化并重新形成新产品。采用先进的技术，如磁分离和涡流分离，确保不同类型的金属得到有效分离和回收。总之，回收废金属是一项重要的实践，促进了环境可持续性、经济增长和节能。通过理解废金属回收的重要性，个人和社区可以在减少废物和保护我们星球资源方面发挥重要作用。随着我们继续面临环境挑战，拥抱回收实践对为后代创造一个更可持续的未来至关重要。