水泥生产矿粉掺加系统优化使用改造

<正>0前言昌黎冀东水泥有限公司水泥生产线,由于矿粉库下料不稳定,原有混料机粉体秤前没有稳流仓,导致混料机前端计量粉体秤不能稳定计量下料,对混料机混料造成波动大,无法保证混料后水泥产品质量稳定,严重制约水泥生产。通过对矿粉出库系统进行改造,在矿粉库顶增加气动开关阀及电动开关阀,把原有的斜槽拆除,     

一种超细高分散橡胶助剂生产装置

正本实用新型公开了一种超细高分散橡胶助剂生产装置。该装置底座的顶部设有混料仓,混料仓的顶端开设有进料口,混料仓的内部横向穿插连接有搅拌杆,搅拌杆的外侧焊接有搅拌叶,底座的顶部内侧设有挤料仓。挤料仓的一端设有出料口,出料口的底部安装有切料仓,     

粉尘静电爆炸的危险分析与对策

2008年8月12日，某厂HDPE掺混仓均化2．5h后发生爆炸；2009年6月4日，该厂ABS干燥单元旋风分离器发生粉尘爆炸。经专家现场调查，认为这两起事故的火源均为粉体自身的静电放电。为了确认事故原因并提出有针对性的措施，该厂组织了技术考察组，对国内同行业事故进行了调研和考察。基本确定这两起事故不是偶然的，在国内外均有类似事故背景，如果不了解该设备的固有隐患源——粉体静电，当设备或操作出现意外时，很难保证不会发生重复事故。     

氯化铵造粒系统

<正>本实用新型属于化肥工业领域,具体涉及一种氯化铵造粒系统。本实用新型包括混料仓、造粒机、筛分机、计量分装机和传送装置,所述混料仓下部连接造粒机上部,所述造粒机通过传送装置连接到筛分机进料口,所述筛分机出料口通过传送装置连接到计量分装机的进料口,筛分机的底部粉料出口通过传送装置连接到混料仓的进料口。本系统经筛分机筛分后,回收不符合要求的小颗粒或粉状氯化铵原料进入回     

一种高弹性硅橡胶加工装置

正本实用新型公开了一种高弹性硅橡胶加工装置,包括混料上料装置、原料A储存装置、原料B储存装置和混料储存器,混料上料装置包括原料上料管道,原料上料管道的顶部连通有弧形管道,弧形管道的中间连通有混料上料管道,混料上料管道的顶部连通有混料管道,原料A储存装置包括原料仓,     

原料表面改性对微波合成TiC粉体的影响

通过调节p H值和添加分散剂(聚丙烯酸),对微波合成Ti C的原料Ti O2和乙炔炭黑进行表面改性处理,将处理后的原料通过湿磨混料,并在微波窑中利用碳热还原反应合成Ti C粉体。利用Zeta电位测试、X射线衍射、激光粒度分析等手段,研究p H值、分散剂、球磨等原料表面改性及混料工艺对微波合成Ti C粉体的物相组成、化学计量、粒度分布的影响。结果表明:Ti O2和乙炔炭黑的较佳改性p H值均为4,其较佳分散剂用量分别是2.4 wt%和9.0 wt%;湿磨混料的较佳时间为6 h;与未经表面改性处理相比,原料经表面改性处理后,微波合成Ti C粉体的温度较低(合成温度降低150℃),粉体粒度较小,化学计量更准确。     

炭素专利

公开号：CN102953092A 公开日：2013—03—06 申请人：贵阳铝镁设计研究院有限公司 发明人：郑淑华 发明名称：炭素阴极配料混捏系统装置 本发明公开了一种炭素阴极配料混捏系统装置,粉料仓连接粉料配料秤,粉料配料秤连接螺旋输送机,螺旋输送机连接压缩空气系统和收料仓;粒料仓连接粒料配料秤,粒料配料秤连接第一皮带输送机,第一皮带输送机连接斗式提升机,斗式提升机连接第二皮带输送机：收料仓、第二皮带输送机分别与混料仓连接．混料仓与加热器连接．加热器与混捏机连接。加热器采用电阻加热器。混捏机为一体式的混捏冷却机。本发明能够实现连续生产、减少操作人员及并且提高自动化生产水平。     

PVC型材的混料及其操作规程

从配料、热混、冷混以及废料的回收与掺混4方面详细论述了PVC型材的混料过程，并给出了具体的操作规程。     

球磨时间对钛酸钡介电性能的影响

通过改变混料的秩序以及采用沉降、水煮损耗、温度特性、电导率和化学分析等测试手段，研究了制备钛酸钡的球磨工艺中球磨时间对钛酸钡粉体均匀性及钛酸钡介电性能的影响。研究结果表明：采用不同的球磨时间制得的钛酸钡性能差别较大，球磨时间达12小时时，能减少球磨引起的团聚，极大地改善了固相合成BaTiO3粉体均匀性，并最终提高了钛酸钡的介电性能。     

一种再生橡胶常压脱硫系统

正本实用新型公开了一种再生橡胶常压脱硫系统,它包括混料罐、储油罐、胶粉料仓、称量斗、搅拌罐、脱硫机、恒温罐、冷却装置和模温机,混料罐、储油罐与称量斗之间通过管道连接,储油罐上安装定量泵,胶粉料仓通过螺旋提升机与称量斗连接,称量斗出口连接搅拌罐,搅拌罐出口连接螺旋输送机,螺旋输送机出口连接喂料螺旋提升机,喂料螺旋提升机出口连接脱硫机的进料斗,脱硫机出口连接恒温罐,恒温罐     

Homogenisieren von Schüttgütern in Mischsilos

Homogenization of bulk solids in blending silos . Blending silos are used for blending and homogenization of large quantities of bulk solids. Depending on how the energy is introduced, we distinguish between pneumatic, mechanical, and gravity flow blenders. The different blending principles are described and the suitability of the blending systems for certain types of bulk solids is explained. Fluidized bed blenders are suitable for homogenization of free flowing fine powders. Gravity flow blenders are used for blending of granular bulk solids. Homogenization of cohesive powders is accomplished in mechanical blending silos. It is necessary for selection of a suitable homogenization system to know the fluidization behaviour and the flow properties of the respective bulk solids. These properties can be determined in laboratory tests.     

粉体料仓的设计

介绍了料仓设计的基本方法, 包括流型选择、流型设计以及卸料口尺寸的确定方法等, 最后给出一个应用实例。     

粉体物料和料斗材料对料仓流型的影响

基于现有的实验数据 ,分析了粉体物料和料斗材料对料仓流型的影响。认为料仓设计的首选流型为整体流 ,形成整体流的料斗材料依次为不锈钢、铝合金、普通碳钢 ;料斗半顶角由实际物料和料斗材料确定。指出在一定半顶角下设计的“标准”整体流料仓 ,只适用于很小一部分粉体物料。     

大直径预应力混凝土库滑模施工工艺简介

滑模施工技术连续作业性强,施工机械化程度高,在储库施工中应用广泛,文章详细介绍了适用于大直径熟料库、变截面库、预应力库等有一定特殊要求混凝土库滑模施工工艺。     

Wall pressure issues in the aeration of bulk material silos

Operators of bulk material silos frequently face various flow defects. These include defects in flow continuity, vaults, stick rings, and dead zones in the bulk material. The application of aeration systems in bulk material silos is an effective method used in order to eliminate the above defects. This paper presents a study of the effect of an aeration system on wall pressures σ_W of bulk material in a silo during a targeted bulk material aeration and relaxation process, and analyses the results in light of the calculation standards for designing bulk material silos, namely ?SN 73 5570 a DIN 1055.     

轻型空气炮清堵器在石膏建材料仓设计中的应用

在石膏建材加工业中，半成品和成品的生产、储存、周转中料仓数量多，料仓黏料等问题是生产厂家普遍头痛的问题。空气炮清堵器具有能耗低、投资小、易维护等特点，是一种理想的破拱、清堵设备。生产实践证明。在石膏建材的石膏粉料仓设计中采用轻型空气炮清堵器，清堵效果良好，能彻底解决料仓黏料问题，减少断料停机，提高了石膏建材产品的产量与质量。     

基于整体流型的粉体料仓设计分析

介绍了各种料仓流型,分析了影响料仓流型的因素,并应用到整体流料仓设计,在料斗形式、曲线、材料的选择以及改流体的设置上,作了详细的分析比较。     

Verfahrenstechnische und statische Aspekte der Siloauslegung

Process Engineering Aspects and Statics of Silo Design. Design of silos for flow is described, starting from the flow profiles developing during discharge. The respective flow profile depends on the flow properties of the bulk solids and on the silo geometry. Based on measured flow properties the determination of the maximum permissible hopper wall inclination to achieve mass flow and of the minimum dimension of the outlet to prevent arching and ratholing is demonstrated, taking into account time consolidation aspects. This yields the size of a feeder and the position of discharge aids. The flow properties are required additionally for structural design of silos. Flow of bulk solids in silos, especially the development of asymmetric flow channels, has a significant influence on the pressure distribution.     

Numerical analysis of silo behavior using non-coaxial models

Granular solids in silos experience considerable principal stress rotations, which result in the non-coaxiality between principal stresses and plastic strain rates. This paper discusses the influences of the use of elastoplastic non-coaxial models for granular solids on predictions of wall pressure distributions in silos by using the finite element method. A well established non-coaxial model in geomechanics, the yield vertex model, is employed. Simulations are performed on a steep hopper characterized with a mass flow and a flat-bottomed silo with a semi-mass flow. The simulations indicate that the non-coaxiality does not influence predictions of wall pressures after filling. On the other hand, the predicted discharge wall pressures with non-coaxial considerations are larger than those without it. Its mechanism is discussed in this paper. The suppressed shear-dilatancy of granular solids in silos leads to a larger increase of normal stress with non-coaxial models.     

Über die Selbsterwärmung der Sonnenblumensaat beim Lagern

Contribution to the Investigation of Selfheating of Sunflowerseed during Storage Some informations are given in this work on the cause and development of fire in silos for sunflowerseed storage and the way of solving this problem in analyzed. The selfheating process has been investigated in laboratory conditions. Numerous factors that influence the beginning and development of the process, like: moisture, oil content, hull quality, impurities, have been investigated. On the basis of the laboratory investigations and data obtained from real fires, some suggestions connected with the building of silos and work in them are given, with the aim of decreasing the possibility of the development of selfheating. Some suggestions are also given for the improvement of the intervention in case of fire in the silos for sunflower-seed storage.