官术网_书友最值得收藏!

4 Raw Material,Fuels and Technical Index

4.1 Raw Material and Fuels

4.1.1 The raw material/feedstock charged in blast furnace shall be mainly sinter and pellet,constituting the burden mix of high-basicity sinters plus acid pellets(self-fluxing pellets)or some lump ores.

4.1.2 The feedstock's charge grade and agglomeration rate should be consistent with the requirements stated in Table 4.1.2 below.

Table 4.1.2 Iron Content and Agglomeration Rate of Charge Feedstock

img

Note:The"average iron content"in the above table excludes content of special ore.

4.1.3 Quality of sinter should be consistent with the requirements stated in Table 4.1.3 below.

Table 4.1.3 Quality Requirements for Sinter

img

4.1.4 Quality of pellet should be consistent with the requirements stated in Table 4.1.4 below.

Table 4.1.4 Quality Requirements for Pellet

img

Notes:1 The above table excludes special ore.
2 The basicity of pellet shall be determined properly in accordance with the burden mix of the blast furnace.It's necessary to make clear specification in the design document that the burdening of acid pellet and high-basicity sinter should be designed for achieving the pellet's physicochemical properties.
3 The basicity of pellet should not be valued in the range of 0.3-0.8.

4.1.5 Quality of lump ore should be consistent with the requirements stated in Table 4.1.5 below.

Table 4.1.5 Quality Requirements for Lump Ore

img

4.1.6 Grain size of feedstock should be consistent with the requirements stated in Table 4.1.6 below.

Table 4.1.6 Requirements for Grain Size of Feedstock

img

Note:Grain size of the limestone,dolomite,fluorite,manganese minerals and silica shall be the same as that of lump ore.

4.1.7 Quality of top-charging coke should be consistent with the requirements stated in Table 4.1.7 below.

Table 4.1.7 Quality Requirements for Top-charging Coke

img

Note:The quality requirements for stamp-charging coke are not listed herein because for stamp-charging coke oven,the coal batching varies greatly,coke products have pretty different densities,heat pattern is not complete as desired,and as a result,the technical indicators of the coke cannot fully meet the blast furnace production needs.

4.1.8 The coal injected into blast furnace shall be selected as the resources condition allows.Quality of the coal for injection should be consistent with the requirements stated in Table 4.1.8 below.

Table 4.1.8 Quality Requirements for Coal Injected into Blast Furnace

img

4.1.9 The feedstock and fuels of blast furnace shall be charged with controlled quantities of harmful impurities within the values required in Table 4.1.9 below.

Table 4.1.9 Control Values(kg/t)of Harmful Impurities in Charge Feedstock and Fuels of Blast Furnace

img
主站蜘蛛池模板: 霍山县| 加查县| 福安市| 凤阳县| 互助| 磴口县| 新建县| 惠来县| 东乌| 沂水县| 延津县| 玉门市| 买车| 临沂市| 阿图什市| 洮南市| 尚志市| 木兰县| 合水县| 兰溪市| 枞阳县| 河间市| 吉木萨尔县| 赣榆县| 民乐县| 襄樊市| 普洱| 鸡东县| 扶余县| 海宁市| 珠海市| 民和| 桃园市| 商城县| 石泉县| 太保市| 三明市| 靖宇县| 乐安县| 江门市| 调兵山市|