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The rare earth wear resistant steel produced by the production line of wide and thick plate of Baotou Steel is the national green design product. In this paper, the distribution of carbon emissions for products in such four stages as within enterprise, load of upstream, transportation stage and recycling by products and carbon emission of each working procedure in enterprise are analyzed as well as the technological paths of carbon drop for rare earth wear resistant steel products are discussed through the life cycle assessment (LCA) of product. The results showed that the carbon emission of rare earth wear resistant steel was mainly in enterprise, accounted for about 78.86% so that such processes as the iron making, sintering and coking as well as energy load in enterprise were the key points of carbon drop, recycle of by products played an active role in carbon drop and applications of advanced technologies made significant carbon drop possible. The carbon emissions in enterprise will be increased by developing high-performance rare earth wear resistant steel, but the effects of energy conservation and carbon drop for the society are significant so that it plays an active role in realizing carbon neutrality in our country to vigorously promote and apply rare earth wear resistant steel.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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