[DOC] [TLE] Hydrogen production - Wikipedia [PAR] Hydrogen production is the family of industrial methods for generating hydrogen. 
Currently the ... Hydrogen can be generated from natural gas with approximately 
80% efficiency, .... The method has been in use since World War I. A heavy steel 
pressure vessel is filled ..... 102 (23): 52340. doi:10.1007/s11120-009-9415-5. [DOC] [TLE] Coal - Wikipedia [PAR] Coal is a combustible black or brownish-black sedimentary rock usually 
occurring in rock strata ... The extraction of coal, its use in energy production and 
its byproducts are all associated with environmental and health effects including 
Climate change. ...... to 23% of the annual worldwide production of CO2 from 
fossil fuels. [DOC] [TLE] Bessemer process - Wikipedia [PAR] The Bessemer process was the first inexpensive industrial process for the mass-
production of steel from molten pig iron before the development of the open 
hearth furnace. The key principle is removal of impurities from the iron by 
oxidation with air ... High-quality steel was made by the reverse process of 
adding carbon to... [DOC] [TLE] Blast furnace - Wikipedia [PAR] A blast furnace is a type of metallurgical furnace used for smelting to produce 
industrial metals, generally iron, but also others such as lead or copper. In a blast 
furnace, fuel, ores, and flux (limestone) are continuously supplied .... In the 
regions with strong traditions of metallurgy, the steel production actually 
increased during... [DOC] [TLE] Haber process - Wikipedia [PAR] The Haber process, also called the HaberBosch process, is an artificial nitrogen 
fixation ... Ammonia was first manufactured using the Haber process on an 
industrial scale in 1913 in BASF's .... Three to five percent of the world's natural 
gas production is consumed in the Haber process (around .... 114 (23): 515
526. [DOC] [TLE] List of countries by steel production - Wikipedia [PAR] This article summarizes the world steel production by country. In 2015, total world 
crude steel ... steel production in 1967, 1980, 1990, 2000 and from 2007 to 2014, 
based on data provided by the World Steel Association. .... Greenhouse gas. [DOC] [TLE] Main sources of carbon dioxide emissions | What's Your Impact [PAR] ... in the last 3 million years.1 2 3 Human sources of carbon dioxide emissions 
are ... Because of this and it's high rate of use, coal is the largest fossil fuel source 
... Transporting goods and people around the world produced 22% of fossil fuel 
.... On average, 1.9 tonnes of CO2 are emitted for every tonne of steel produced.
15. [DOC] [TLE] Which Countries Produce The Most Fossil Fuels? [PAR] Jul 31, 2014 ... So, which countries lead the world in extracting fossil fuels from the ground? First 
things first. ... Many things can be done with oil, coal or natural gas. ... Similarly, 
oil is almost never used for the production of electricity or steel. [DOC] [TLE] A Comparison of Iron and Steel Production Energy Use and Energy ... [PAR] efficiency of steel production has a direct impact on overall energy ... equipment, 
fuel shares in the iron and steel industry, and final steel product mix in both ...... of 
EAF in Total Steel Production in China and the U.S. and World Average Values. [DOC] [TLE] Hydrogen Production and Storage - International Energy Agency [PAR] to improve the world's energy supply and demand structure by developing 
alternative ... This review of priorities and gaps in hydrogen production and 
storage R&D has been prepared by ... fuel cells established by the IEA in April 
2003 with the aim of improving policy ...... have at best only 2-3 times higher 
production costs. [DOC] [TLE] Energy and recycling in steel production systems - ScienceDirect [PAR] This paper examines the effect of scrap levels on the energy to produce steel 
ingot ... TABLE 1 Energies associated with various fuels used in the U.K. Fuel 
Unit ... 3 Energy requirements for the unit operations shown in Figures 2, 3 and 5. 
.... to a wide range of steel producing countries, particularly in the developing 
world. [DOC] [TLE] Steel Industry Energy Consumption: Sensitivity to Technology ... [PAR] Sep 15,

Question: 2/3 of the world's steel is produced using this as fuel
Answer: coal