选矿药剂企业发展过程中环境保护问题的管理策略

选矿药剂生产企业在生产过程中的环境污染问题越来越突出,污染物扰民的问题时有发生.在可持续生态环保理念下,如果企业管理者不认识到现阶段选矿药剂生产企业在生产过程中存在的污染问题,并及时采取措施解决污染问题,必定会影响选矿药剂生产企业的生存和发展.简述了选矿药剂生产企业在生产过程中环保管理中存在的环保意识薄弱、治理技术落后...     

选矿自动化讲座——选矿过程主要工艺参数自动检测的现状及其发展概述

利用电子计算机控制选矿生产过程,实现生产的自动化和科学管理,目前已成为选矿工业技术现代化的重要标志。为了达到上述目标,必须首先解决选矿生产过程主要工艺参数的自动检测问题;但是因为选矿的条件比较特殊,例如从矿石破碎、磨矿、分     

有色选矿厂节能设计理念

本文根据我国有色金属工业节能的总体目标和节能设计的任务,论述了选矿设计从资源综合利用、选矿试验、选矿生产规模化、厂址选择、先进节能的选矿工艺到新型设备的应用、选矿自动化及保护生态环境等方面的节能理念。     

云南有色选矿现场经验交流会在大姚铜矿召开

云南省冶金工业厅于1984年元月9日至14日在云南大姚铜矿召开了“云南有色选矿现场经验交流会”。参加会议的代表有云南有色企业各矿山主管选矿的企业领导,选矿副总工程师,选矿处、科长以及各选矿厂厂长、生产技术科长等主要负责同志。还有科研、选矿药剂生产单位、冶金机械部门     

陶瓷过滤机处理尾矿和铁精矿的试验研究

通过在天宝选矿现场使用小型陶瓷过滤机进行过滤其铁精矿和尾矿的半工业化试验,探索在极端干旱缺水地区节约选矿生产新水耗、降低选矿生产成本、实现选矿扩大再生产的途径。     

DF-PSM超声波粒度仪在选矿生产中的应用

在选矿生产过程中,粒度、浓度是选矿工艺流程控制过程中的两个关键指标,矿浆样品粒度、浓度测定的时效性要求也越来越高,DF-PSM超声波粒度仪在选矿生产中可以实现实时监测,全天24小时不间断运行,反馈磨矿自动控制,稳定和提高了选矿产品质量。     

矿物工程研究所

正矿物工程研究所是西北矿冶研究院的主体研究所之一,长期从事选矿厂设计、选矿工艺技术研究、选矿新药剂研发与应用、选矿技术咨询与服务等工作,是西北地区唯一一所集小型选矿试验研究、扩大连续选矿试验研究、选矿咨询设计及生产技术服务于一体的综合性选矿科研机构。     

矿物工程研究所

<正>矿物工程研究所是西北矿冶研究院的主体研究所之一,长期从事选矿厂设计、选矿工艺技术研究、选矿新药剂研发和应用、选矿技术咨询与服务等工作,是西北地区唯一一所集小型选矿试验研究、扩大连续选矿试验研究、选矿咨询设计及生产技术服务于一体的综合性选矿科研机构。     

系统工程在选矿生产中的应用

论述了系统工程在选矿生产中应用的方法、关键、步骤和实践，探讨了选矿生产的科学管理新模式     

四川省有色金属矿产资源开发工程技术研究中心四川省有色冶金研究院选矿工程研究中心

四川省有色冶金研究院选矿工程研究中心成立于二十世纪六十年代初期,长期从事有色金属、黑色金属和非金属矿的选矿工艺研究和设计工作,是技术力量雄厚的一个集科研、生产、选矿药剂销售、选矿设计、技术服务于一体的专业选矿工程研究机构该中心现有各类试验设备一百多台,能充分满足重选、磁选、     

论从实践理解世界的物质性和自然世界的先在性

马克思主义唯物论是一种物本主义形态的唯物论,还是一种超越物本主义形态、从实践理解世界的本质相关问题的实践的唯物主义的唯物论?这是一个我们必须搞清楚的有关马克思主义唯物论的本质规定性和精神实质的重大问题.在考察物本主义的唯物论及其思维方式的局限性的基础上,揭示了马克思主义唯物论是现代的、实践的唯物主义,并重点研讨了马克思主义唯物论关于从实践理解世界的物质性和自然世界的先在性的原理,以期为马克思主义唯物论进一步阐明人类世界的实践性原理奠定基础.     

Effect of cyproheptadine on the ultrastructure of the neurons of the arcuate nucleus in the hypothalamus of the rat

The data are presented on changes in the rat arcuate nuclear neuron ultrastructure after using cyproheptadine (peritol, Egyt Pharmaceutical Works, Hungary) in a water suspension at a dose of 20 mg/kg once daily during 7 successive days and twice a day within 10 days. It was shown that cyproheptadine decreases the functional activity of the arcuate nuclear neurons, depending on the total amount of the drug used. Cyproheptadine-induced inhibition of the forming neurohormone release from neurons is likely to be one of the mechanisms of its therapeutic effect in Itsenko-Cushing's disease.     

Characteristics of the sympathetic innervation of the nictitating membrane and of the vasculature of the nose and tongue of the cat

Vasomotor responses from the nasal mucosa and tongue, and contractions of the nictitating membrane, were recorded on stimulation of the cervical sympathetic or internal carotid nerves. Preganglionic sympathetic nerve fibres which elicited a membrane response possessed a lower threshold than those which evoked nasal vasoconstriction, while the latter displayed a lower threshold than fibres which evoked tongue vasoconstriction. The sympathetic vasodilator fibres to the tongue whose activity was revealed after alpha-receptor blockade, had a similar threshold to the vasoconstrictor fibres. Membrane contraction, nasal vasoconstriction and occasionally tongue vasoconstriction could be evoked by stimulating the internal carotid nerve. The postganglionic fibres innervating the nasal mucosa had a similar threshold to those of the nictitating membrane, which may indicate that there are small myelinated fibres innervating the mucosa. The preganglionic compound nerve action potential had four major components, S1-S4. S1, S2 and usually S3 fibres were associated with membrane contraction; S2, S3 and sometimes S1 fibres were associated with nasal vasoconstriction; and S3, usually S2 and occasionally S1 fibres were associated with vasoconstriction in the tongue. It is concluded that each of these three groups of nerve fibres, but not S4 fibres, may include fibres associated functionally with the three effectors. There was a considerable difference between the relative amplitude of the responses of the three effectors elicited by stimulation of the cervical sympathetic nerve at frequencies between 0.2 and 2 Hz. Vasoconstrictor responses were relatively larger than membrane contractions suggesting differences in the mechanisms of neurotransmission at the neuroeffector junctions.     

Structure of the attachment of the vocal ligament to the perichondrium of the thyroid cartilage

The ventral attachement of the ligamentum vocale of eleven larynges (new-born and adults has been studied in sagittal, frontal and horizontal sections. 1. Supplementary to the known structure of the ventral attachement of the ligamentum vocale we have noticed collagen fibers which ascend in the inner angle of the thyroid cartilage and which partly cross to the other side. Sometimes a few fibers which are running downward have been observed. This structure of the attachement must be more firm than the known structure. 2. Moreover it has been observed that a lot of the angles of the crossing collagen fibers in the cartilage of the lamina mediana (near the attachement of the ligamentum vocale) are right-angled, whereas the angles of the fibers which lie in the laminae laterales in their majority are acute-angled. This phenomenon also is interpreted as a structure which makes the lamina mediana firmer. The fact, that this structure is not so evident in the specimens of the new-born as in those of the adults indicates that there are postnatal changes in the structure of the lamina mediana.