每日一题
锲而不舍，金石可镂
每日一题
This process, developed independently by William Kelly of Eddyville, Kentucky and Henry Bessemer of England, involved blowing air through a bath of molten pig iron (生铁) contained in a bottom-blown vessel lined with acid (siliceous) refractories (耐火材料). The process was the first to provide a large scale method whereby pig iron could rapidly and cheaply be refined and converted into liquid steel.
Bessemer’s American patent was issued in 1856; although Kelly did not apply for a patent until 1857, he was able to prove that he had worked on the idea as early as 1847. Thus, both men held rights to the process in this country; this led to considerable litigation (诉讼) and delay, as discussed later. Lacking financial means, Kelly was unable to perfect his invention and Bessemer, in the face of great difficulties and many failures, developed the process to a high degree of perfection and it came to be known as the Bessemer process.
The fundamental principle proposed by Bessemer and Kelly was that the oxidation of the major impurities in liquid blast furnace iron (silicon, manganese and carbon) was preferential and occurred before the major oxidation of iron; the actual mechanism differs from this simple explanation, as outlined in the discussion of the physical chemistry of steelmaking in Chaper 2.
What is the passage mainly about?
A. Protection of patents and intellectual property rights.
B. A steelmaking process and the story of its invention.
C. The materials used in bottom-blown acid vessels.
D. Bessemer and Kelly’s contribution to steelmaking.
感谢关注，一起为冶金青年点赞在看吧～
