共查询到20条相似文献,搜索用时 109 毫秒
1.
2.
3.
半连续铸造法生产T2A紫铜的工艺是:配料→加料→熔化→加Cu-P中间合金→熔化→铸造→吊锭→半成品摆放。此工艺虽较成熟,但是所生产的铸锭尚存在密度达不到指标、裂纹、夹渣及漏挂等一系列质量问题,尤其是生产T2AФ210的铸锭,问题更为严重。通过对工艺的摸索与试验,得出一些解决的措施,并且已取得良好的效果。 相似文献
4.
5.
6.
7.
8.
以金属热还原法制备了V-Ti-Fe合金,主要考察了原料中V2O5与TiO2质量比R对炉渣初晶温度及合金成分的影响。结果表明,随着R的降低,渣体的初晶温度显著升高,所得合金中Ti含量和Al、O杂质含量也明显增加,Si含量则基本不变。XRD、SEM和EDS分析结果表明,所制备合金均具有钒基固溶体结构。合金中Ti存在一定偏析,部分集中于富钛相内。当R≤0.6时,在合金中检测到了明显的Al-O夹杂相。 相似文献
9.
10.
对我国电炉生产发展和电炉炼钢原料现状进行分析,结合我国钢铁比高和小高炉炼铁多的特点,提出调整原料结构,增加生铁配比是提高电炉钢市场竞争力的重要措施。 相似文献
11.
Somyote Kongkarat Rita Khanna Pramod Koshy Paul O'Kane Veena Sahajwalla 《国际钢铁研究》2011,82(10):1228-1239
Bakelite is a thermoset plastic commonly found in electronic and automobile components. CaCO3 is generally found in the polymer as a filler material. Since it cannot be remelted, the disposal of this material has become an environmental issue. The present study investigates a new route to utilize waste bakelite as a source of carbon in EAF steelmaking process. This paper reports the carbon dissolution behaviour of bakelite/coke blends into liquid steel at 1550 °C. The carbon pick up in the liquid steel after reaction with varying blends of bakelite/coke for 30 minutes ranged between 0.13 wt% to 0.17 wt%; these were generally higher than that observed from coke alone (0.1 wt%). The dissolution rate (K) was also found to improve and the observed trend was BK2 (0.045 × 10?3 s?1) > BK3 (0.023 × 10?3 s?1) > BK1 (0.005 × 10?3 s?1) > coke (0.003 × 10?3 s?1). The reaction products formed at the interface after 30 minutes of contact between liquid steel and bakelite/coke blends were observed to be a CaS‐Al2O3 complex. The presence of CaS in the interfacial layer due to the CaO in the ash, lowered melting temperature of the layer, thereby allowing for increased removal of the ash layer and greater carbon pick‐up. The CaO is formed from the decomposition of CaCO3, and its presence was found to have a positive effect on modifying the properties of the coke, and thereby enhancing the carbon dissolution behaviour. 相似文献
12.
13.
在大量的混匀科生产数据的基础上,利用概率统计的方法,对南钢原料厂新混匀作业区混匀料不合格率进行了深入的探讨.通过对现场数据的多角度、全方位的剖析,找出了影响南钢新混匀作业区混匀料合格率的主要因素,并对其影响进行了研究分析,为今后的混匀料生产管理工作提供了科学的参考依据. 相似文献
14.
由于矿山系统生产工艺的制约,导致白灰窑使用的原料有时不够,通过扩大使用原料的粒度范围,找出最适合的原料粒度比,对两条生产线采用分级煅烧的实践,保证了白灰窑的产量和质量,收到较好的效果。 相似文献
15.
Guixi Smelter has been explored continuously in many years of production practice, through in-depth research of the raw material status of various coarse and miscellaneous copper, especially the study on the distribution law of gold and silver in copper ingot.It has very important reference significance to improve sample representativeness. We set samples according to the ratio of furnace times,increase the sampling ratio, partition drill samples, and evenly distribute the crushed copper rice to guarantee sample representativeness.At the same time, we minimize analysis error and further improve sample representativeness by strengthening the process control of drilling samples, and opening furnace and sample preparation. 相似文献
16.
17.
随着中国铜冶炼企业不断壮大,需要进口大量的铜原料,一般贸易和加工贸易是铜行业原料进口的主要方式,犹如企业"两条腿"走路。而在国家"两高一资"政策的调控下,取消了铜原料加工贸易政策。本文阐述了铜原料加工贸易对企业的重要性、合理性,以及通过本企业对资源、环保等综合利用情况的分析,认同铜原料加工贸易政策存在的可行性,表达了恢复铜原料加工贸易政策对铜企业的重大意义。 相似文献
18.
19.
20.
就硬件、软件两方面分析了山西铝厂西堆场原料输送计算机控制系统改造的原因,详述了生产中原料输送的工艺要求,并通过对DCS和PLC两种控制系统的硬件组态、软件功能及优缺点的分析提出了山西铝厂原料输送系统的最佳控制方案。 相似文献