But blast furnaces require a lot of coal, which means greenhouse gas pollution.

但高炉需要燃烧大量的煤炭，这意味着温室气体污染。

The latter is a big provider of iron ore to China, where dozens of blast furnaces have been closed because of restrictions on movement.

力拓矿业集团中国的大型铁矿石供应商，中国有数十座高炉因为运输限制而关闭。

We had an announcement this week that U.S. Steel plans to restart one of two idle blast furnaces in Illinois and call back 500 workers.

本周，美国钢铁公司宣布，他们计划重启利诺座闲置高炉中的其中一个，并招聘500名工人。

No. You can buy iron ore anywhere and the ore from the Mesabi Mountains is like dust. It clogs the blast furnaces.

哪里买不到铁矿石 偏要到梅萨比山脉那买 那里的铁矿石就像垃圾 只会堵塞高炉。

At that speed, the surface of the airfoil is the temperature of molten steel 3,500 degrees Fahrenheit like a blast furnace.

在这个速度下，机翼表面温度钢水的温度，华氏3,500度，就像一个高炉一样。

It is next mixed with some more coal and with lime, and the whole is put into a tall furnace.

然后, 把铁矿石跟更多的煤, 还有沥青混在一块儿, 一起放进一座高炉里头。

Just 60% of steel blast-furnaces are now in use, down sharply since October and near a five-year low.

去10月以来，钢厂高炉开工率大幅下滑，仅为60%，接近点。

The temperature required to make an authentic Neapolitan pizza is stupidly, unbelievably hot-more blast furnace than broiler.

制作正宗的那不勒斯披萨所需的温度高得离谱，令人难以置信，它更像炼钢高炉的温度，而非普通烤箱。

The heat of the coal melts the iron, and it sinks to the bottom of the furnace.

煤的热度会把铁熔化, 让熔化的铁水流到高炉底下。

Red-hot molten metal pours forth from the bottom of towering blast furnaces.

炽热的熔化金属从高耸的高炉底部涌出。

A blast furnace is a big, tall column.

高炉一个高大的柱体。

This uses calcium extracted from slag, a traditional waste product, and combines it with CO2, captured from blast furnace gas, to make high-quality calcium carbonate, which the start-up plans to sell as a food ingredient.

这使用从炉渣中提取的钙，炉渣一种传统废弃物，并将其与从高炉煤气中捕获的二氧化碳结合， 制成高品质的碳酸钙，该初创公司计划将其作为食品原料销售。

It's slightly unclear how many jobs would be threatened if the blast furnaces were to close because there are parts that are involved in processing the steel, but 3,500 is roughly the direct number.

如果高炉关闭， 受影响的岗位数量尚不完全明确， 因为涉及钢铁加工的各个环节，但直接受影响的岗位大约有3500个。

Two firms, Tata Steel and British Steel, each turn out 3 million tonnes at their plants in Port Talbot and Scunthorpe respectively, using the conventional approach of blast furnace followed by oxygen furnace.

家公司，塔塔钢铁和英国钢铁，分别在其位于波特塔尔博特和斯肯索普的工厂使用传统的高炉后接氧气炉的方法生产300万吨钢材。

Some firms are opting to replace these with new direct reduced iron or DRI and electric arc furnace or EAF plants Blast fan is still making is doubly carbon intensive.

一些公司选择用新的直接还原铁（DRI）和电弧炉（EAF）工厂来替代这些设施。而传统的高炉仍然使用煤炭，其碳排放量双倍的。

It is hard to decarbonise when steel is made from virgin iron ore in conventional blast furnaces, because coal is used both as fuel and a reducing agent.

在传统高炉中， 使用原生铁矿石制造钢铁时难以实现脱碳，因为煤炭既作为燃料又充当还原剂。

If blast furnaces run out of the raw materials to keep them operating, it can be extremely difficult and costly to get them going again.

如果高炉耗尽了维持运转所需的原材料，再次启动它们可能会极其困难且成本高昂。

Within a few decades, the entire continent was laced together by iron train tracks, and it all started here with Abraham Darby's blast furnace.

几十之内，整个大陆都被铁轨连接在一起，而这一切都始于亚伯拉罕达比的高炉。

Visiting the site in Scunthorpe today, Deputy Prime Minister Angela Rayner was able to say that the furnaces would continue to burn.

副首相安吉拉·雷纳今日探访斯肯索普现场，得以宣布高炉将继续运转。

The Chinese firm that owns it wants to close the blast furnaces there and switch to a greener form of production.

这家中国公司希望关闭当地的高炉，转向更环保的生产方式。