smelts

简明释义

英[smelts]美[smelts]

n. 胡瓜鱼（smelt 的复数）；胡瓜鱼科

v. 熔炼；精炼（smelt 的第三人称单数）

英英释义

单词用法

同义词

反义词

例句

1.Since the first cases emerged in 2009, more than 3,000 children have been found to have unsafe levels of lead in their blood, forcing the closure of dozens of smelts and factories.

自2009年发现首例案例之后，超过3000名儿童被检查出血液铅含量超标，迫使数十家冶炼厂和工厂关闭。

2.Since the first cases emerged in 2009 more than 3 000 children have been found to have unsafe levels of lead in their blood forcing the closure of dozens of smelts and factories.

自2009年发现首例案例之后，超过3000名儿童被检查出血液铅含量超标，迫使数十家冶炼厂和工厂关闭。

3.The water company cuts the agriculture water to rescue the smelts.

水公司削减农业用水救香鱼。

4.Stainless steel filter elements for highly viscous or aggressive media at high temperatures, eg polymer smelts.

不锈钢在高温高粘稠或腐蚀性介质过滤元件，如聚合物冶炼。

5.There, biologist Joan Lindberg is raising thousands of delta smelts in a captive-breeding program as a possible safety net against extinction.

在这个实验室中，生物学家JoanLindberg饲养了几千条的三角洲胡瓜鱼，这个人工繁育计划旨在形成一个可能的安全网，防止这种鱼类灭绝。

6.The hydraulic pressure clay gun is smelts iron one of blast furnace important equipment, may facilitate stops up the taphole, in order to next smelting.

液压泥炮是炼铁高炉的重要设备之一，可方便的将出铁口堵住，以便下一次冶炼。

7.Outside China, at any rate, a producer smelts or sinks according to its position on aluminium’s cost curve.

无论如何，中国境外的生产者需要根据铝成本曲线的位置点来选择熔炼或者放弃。

8.The foundry smelts iron.

这个铸工厂熔铸铁。

9.The process of how the company smelts aluminum is quite complex.

这家公司如何冶炼铝的过程相当复杂。

10.The factory smelts iron from ore to produce steel.

工厂从矿石中冶炼铁以生产钢材。

11.They smelts copper to create electrical wires.

他们冶炼铜以制造电线。

12.In ancient times, people smelts metals using simple furnaces.

在古代，人们使用简单的熔炉来冶炼金属。

13.He smelts gold in his workshop for making jewelry.

他在工作坊里冶炼金子来制作珠宝。

作文

In the world of metallurgy, few processes are as fascinating and essential as the method of extracting metals from their ores. One such process is known as smelting, which involves heating ores to high temperatures in order to separate the metal from impurities. This technique has been used for thousands of years, dating back to ancient civilizations that relied on metals for tools, weapons, and art. The significance of smelting cannot be overstated, as it laid the foundation for modern metalworking and industrialization.The smelting process typically begins with the extraction of ore from the earth. Ores are naturally occurring rocks that contain valuable minerals, often in the form of metal oxides. Once the ore is mined, it must be crushed and ground into a fine powder to increase the surface area for the subsequent chemical reactions. This preparation is crucial for efficient smelting, as it allows for better heat transfer and more effective separation of the metal.Next, the powdered ore is mixed with a reducing agent, usually carbon in the form of coke, and a flux, which helps to remove impurities. The mixture is then placed in a furnace, where it is heated to temperatures often exceeding 1,000 degrees Celsius. During this heating process, the carbon reacts with the metal oxides in the ore, reducing them to their elemental form. For example, in the case of iron ore, the reaction can be simplified as follows: Iron oxide (Fe2O3) + Carbon (C) → Iron (Fe) + Carbon dioxide (CO2).As the temperature rises, the metal melts and separates from the slag, which is the waste material containing impurities. This molten metal can then be poured into molds to create ingots or other shapes, depending on the intended use. The remaining slag is often discarded or repurposed in construction and other applications.One of the most remarkable aspects of smelting is its environmental impact. Traditional methods have been criticized for their contribution to air pollution and greenhouse gas emissions. However, advancements in technology have led to the development of cleaner and more efficient smelting techniques. For instance, some modern furnaces employ oxygen-enriched air to enhance combustion, reducing the amount of carbon needed and minimizing emissions. Additionally, recycling metals through smelting processes has become increasingly popular, as it requires significantly less energy compared to extracting metals from raw ores.Furthermore, the importance of smelting extends beyond just the production of metals. It plays a critical role in the economy, providing jobs and supporting industries such as construction, automotive, and electronics. The demand for metals continues to rise as technology advances and new applications emerge, making smelting a vital process for sustaining economic growth.In conclusion, the process of smelting is a cornerstone of metallurgy and has shaped human civilization in countless ways. From its ancient origins to contemporary practices, smelting remains an indispensable method for extracting metals that are essential for our daily lives. As we strive for a more sustainable future, it is crucial to continue innovating and improving smelting techniques to minimize their environmental impact while meeting the growing demand for metals. With ongoing research and development, the future of smelting looks promising, ensuring that this ancient art will continue to thrive in the modern world.

在冶金学的世界中，提取金属的过程既迷人又至关重要。其中一种方法被称为熔炼，它涉及将矿石加热到高温，以便从杂质中分离出金属。这种技术已经使用了数千年，可以追溯到依赖金属制作工具、武器和艺术品的古代文明。熔炼的重要性不容小觑，因为它为现代金属加工和工业化奠定了基础。熔炼过程通常始于从地球上提取矿石。矿石是自然发生的岩石，含有有价值的矿物，通常以金属氧化物的形式存在。一旦矿石被开采，就必须被粉碎并磨成细粉，以增加表面积，以便后续的化学反应。这一准备工作对于高效的熔炼至关重要，因为它可以更好地传递热量，并更有效地分离金属。接下来，粉末状矿石与还原剂（通常是以焦炭形式存在的碳）和助熔剂（有助于去除杂质）混合。然后将混合物放入炉中，在那里加热到超过1000摄氏度的高温。在加热过程中，碳与矿石中的金属氧化物反应，将其还原为元素形式。例如，在铁矿石的情况下，反应可以简化为：铁氧化物（Fe2O3）+ 碳（C）→ 铁（Fe）+ 二氧化碳（CO2）。随着温度的升高，金属熔化并与渣分离，渣是含有杂质的废料。这种熔融金属可以倒入模具中，制成锭或其他形状，具体取决于预期用途。剩余的渣通常被丢弃或在建筑和其他应用中重新利用。熔炼的一个显著方面是其对环境的影响。传统方法因其对空气污染和温室气体排放的贡献而受到批评。然而，技术的进步导致了更清洁、更高效的熔炼技术的发展。例如，一些现代炉子采用富氧空气来增强燃烧，减少所需的碳量，从而最小化排放。此外，通过熔炼过程回收金属变得越来越流行，因为它所需的能量显著低于从原矿石中提取金属。此外，熔炼的重要性不仅限于金属的生产。它在经济中发挥着关键作用，提供就业机会并支持建筑、汽车和电子等行业。随着技术进步和新应用的出现，对金属的需求持续上升，使得熔炼成为维持经济增长的一个重要过程。总之，熔炼过程是冶金学的基石，并以无数方式塑造了人类文明。从古代起源到当代实践，熔炼仍然是提取对我们日常生活至关重要的金属的不可或缺的方法。在我们努力实现更可持续的未来时，继续创新和改进熔炼技术，以最小化其对环境的影响，同时满足对金属日益增长的需求，是至关重要的。随着持续的研究和开发，熔炼的未来看起来充满希望，确保这一古老艺术将在现代世界中继续繁荣。