鞍钢烧结“一段筛分”采用椭圆等厚冷矿筛

椭圆等厚冷矿筛（ＴＤＬＳ）是为烧结“一段筛分”工艺研制的关键设备。“一段筛分”在鞍钢三烧技术改造中获得成功，表明ＴＤＬＳ具有比常规冷矿筛更高的筛分效率，因此，在烧结厂有广泛的用途。本文就ＴＤＬＳ的研究开发、样机试验、工业生产几方面介绍这项设备的特点和应用情况。

冷矿筛用新颖隔振器——复合弹簧的研制

复合弹簧是用于各种振动机械的最佳减振、降低噪音的元件，它的研制成功填补了我国的一项空白，本文着重介绍了用于冷矿筛上的复合弹簧构造、设计、制造、特性及其国内外应用情况。

冷矿振动筛用金属—橡胶复合弹簧的测试与分析

一、前言目前,在冶金行业中,大部分冷矿振动筛(以下简称冷矿筛)采用金属弹簧进行防振与隔振。这种冷矿筛存在着以下缺点: (1)起动、停机时间较长; (2)通过共振区的共振现象较为严重; (3)噪声较大。为克服上述缺点,西安重型机械研究所于1986年10月至11月对攀钢烧结厂的冷矿筛进行了技术改造——用金属-橡胶复合弹簧(以下简称复合弹簧)代替金属弹簧。结果,不但大大降低了噪声,而且在其它方面也取得了令人满意的效果。本文将通过对冷矿筛电机功率。

复合变质处理高铬铸铁在冷矿筛板上的应用

针对国内冷矿筛板普遍用CrMnN耐热钢制诈，使用寿命短、更换频繁问题，研制成功钾、稀土耐磨高铬铸铁筛板。装机使用表明，钾、稀土耐磨高铬铸铁筛板使用安全、可靠，具有较好的使用效果，值得广泛推广使用。

烧结冷矿振动筛筛板的研究与生产

冷筛板是烧结冷矿振动筛的主要部件.介绍了用ZG55MnMoVTi生产冷筛板的研究、生产和应用情况.它与原冷筛板(ZG3Cr18Mnl2Si2N)比较,结果表明,耐磨性提高63.2%,寿命提高35%以上.

金源烧结厂工艺设计中冷矿筛配置的研究

对金源烧结厂冷矿筛工艺设计进行了优化研究，根据影响筛分作业的主要因素的分析，对该厂原设计的冷矿筛选型进行了适当修改。

莱钢LZS2575冷矿振动筛适应性改造

为解决LZS2575冷矿振动筛侧板、横梁开裂、传动轴易损坏等问题,对筛子采取了侧板整板下料、横梁选用工字钢,并敷设耐磨护梁板,增加传动轴底座螺栓等一系列改造措施,使冷矿振动筛设备故障率明显降低。

烧结机冷矿振动筛的改造

针对崇钢烧结冷矿振动筛存在的灰斗开焊、横梁裂纹及断裂、加强板开裂等问题,通过改造隔振系统、优化横梁结构、强化加强板等措施,使冷矿振动筛整体结构更加合理,运行平稳,未再发生设备事故,降低了生产成本。

武钢三烧大型冷矿振动筛的研制

通过时武钢三烧筛分室改造及３０００ｍｍ×８０００ｍｍ大型冷矿振动筛设计、研制、调试工作总结和理论分析，论述了大型冷矿筛振动参数确定的方法及大型冷矿筛振动系统、筛机结构优化的途径。

SL3075双通道双质量冷矿筛动力学分析

对SL3075双通道、双质量大型振动冷矿筛进行了详细的动力学分析，建立了双质量振动系统的参数选择理论及其合理设计方法，满足了大型振动筛的设计要求。

TDLK3090三轴等厚冷矿筛设计研究

介绍了三轴等厚冷矿筛的结构形式和工作原理，并对其进行了运动学和动力学分析。

鞍钢三烧车间技术改造实践

鞍钢三烧车间采用鼓风带冷—一段筛分新工艺，改热矿为生产冷矿获得成功，成品烧结矿筛分指数小于５％，投资比常规工艺改造降低４８％。本文重点介绍一段筛分采用的新工艺、新技术。

基于InTouch的烧结数据采集系统的设计与实现

介绍了在烧结自动化系统中,人机界面的开发、设计思想以及报表制作实例,介绍了烧结生产的主要流程以及InTouch组态软件的特点,并详细说明了自动化系统的硬件配置以及软件开发过程。

应用高新技术 提高烧结工艺水平

本文介绍了近几年首钢矿业公司烧结厂开发、引进新技术解决现场实际问题的情况，提出了下一步发展的设想。

烧结生产工艺中自动控制系统的应用

在鞍钢炼铁总厂老三烧车间改冷矿工程中，采用了美国A—B公司PLC，SLC系统可编程序控制器，实现了整个烧结车间主要工艺生产线的过程和电气设备的顺序控制。达到了一次试车成功，并且进入了生产阶段。

Preliminary Study on the Accumulation Characteristics of Mineral Elements in Potted Poa crymophila under Drought and Water Stress

[Objective] This study was conducted to explain the mechanism of the accumulation characteristics of mineral elements in alpine grassland plants. [Method] Cultivated alpine grassland plant, Poa crymophila, was treated with drought and wa- ter stress, and then the samples were collected and analyzed. [Result] Compared with the control group, under drought and water stress, multiple mineral elements tended to accumulate and increase, and there were significant differences in the contents of Cu, Mn, Ni and P （P〈0.05）. [Conclusion] Under drought and water stress, mineral elements in potted Poa crymophila tended to accumulate and in- crease, which is the adaption and response of Poa crymophila to drought and water stress, as well as the re-verification of the starvation effect hypothesis of mineral effects. The starvation effect of mineral elements is one of the endogenic forces for the accumulation and differentiation of mineral elements in grassland plants.

Progress of heat-hazard treatment in deep mines

Based on the urgency of thermal hazard control in deep coal mines,we studied the status of deep thermal damage and cooling technology both at home and abroad,summarized the causes of deep thermal hazard,analysed and compared the control technologies for deep thermal hazards.The results show that the causes of deep thermal damage can be attributed to three aspects,i.e.,climate,geological and mining factors,of which the geological factors are deemed the major reasons for thermal hazards.As well,we compared a number of cooling technologies of domestic and overseas provenance,such as central air conditioning cooling technology,ice cooling technology and water cooling technology,with one other cooling technology,i.e.,the HEMS cooling technology,which has a large and important effect with its unique＂pure air＂cooling technology,realizes the utilizing of heat resources from underground to the ground.This technology makes use of heat obtained underground;thus the technology can promote low-carbon environmental economic development in coal mines,in order to achieve low- carbon coal production in China.

Preservation of moderately thermophilic culture by freeze drying and frozen preservation way and effect on subsequent bioleaching of chalcopyrite

Freeze drying and frozen preservation way was used to preserve a moderately thermophilic culture for bioleaching of chalcopyrite concentrate.After preservation of 15 months,the cell viability rate decreases to 22% with a cell density of 7×107 mL-1.When the growth time was extended from 8 days to 14 days,cell density would increase in a large scale to about 3×108 mL-1.In the bioleaching experiments,unpreserved and preserved cultures were compared for dissolving chalcopyrite concentrate.Before 44 days,the unpreserved culture can reach a high copper extraction of about 17.4 g/L.While the preserved culture shows a rather low copper extraction,which is only 9.7 g/L.When the bioleaching time was extended to 80 days,copper extraction by preserved culture increases remarkably,and the concentration of copper finally achieves up to 18.3 g/L.On the other hand,copper extraction by the unpreserved culture does not show remarkable increase from 44th to the 80th day,and finally the total copper extraction is 19.8 g/L.As a result,total copper extraction in 80 days by preserved culture approaches that by unpreserved culture and freeze drying and frozen preservation even after 15 months does not bring much decrease of bioleaching ability.

Comparison of bioleaching of chalcopyrite concentrates with mixed culture after cryopreservation with PEG-2000 in liquid nitrogen

A mixed culture of bioleaching microorganisms was enriched.Then the mixed culture was preserved by liquid nitrogen cryopreservation for 6 months and 12 months,respectively,using PEG-2000 as the protective agent.The chalcopyrite leaching ability,activity and diversity of the mixed culture before and after preservation were compared.The results showed that the copper extraction rate was 95.7%in chalcopyrite bioleaching within 20 d by the original culture.After cryopreservation for 6 months and 12 months,the copper extraction rate of the mixed culture was 94.9%within 25 d and 93.6%within 35 d,respectively.The cell viability achieved 87%and 41%after being preserved for 6 months and 12 months,respectively.Furthermore,the ecology analysis identified Acidithiobacillus ferrooxidans,Acidithiobacillus caldus,Sulfobacillus thermotolerans and Pseudomonas aeruginosa in the original mixed culture.After cryopreservation for 12 months,the composition of community changed,but the predominant microorganisms still existed.

Field experiment on coalmine heat disaster governance using cold source from surface water

Regarding the lack of cold source for underground cooling systems from either mine inflow or return air, field experiments were taken in a high temperature deep coal mine with abundant cold source from surface water. Taking Sanhejian coal mine as an example, this paper introduced the technology scheme of heat disaster governance using surface water cold source. The paper presents the basics of this field experiment at the beginning, following by the design and site layout of the cooling system including the analysis and calculation of cold source. Numerical calculation method is also applied based on the operation parameters to simulate the influence to the surface river ecosystem. The results suggest that the temperature of surface water shall be lower than 34 ℃ after heat exchange, and when more cooling capacities are needed in the future, increasing the water flow is more favorable than increasing the cooling range of water, which is better for the ecological environment protection,