这个问题有点难回答，国内的碎石机厂家这么多，谁都说自己是好的。好与不好，只有自己去厂家看了之后才知道。
精确的除铁装置，顽石破碎系统放宽对铁器的限制界限，是今后研究的方向。1)排料口堵塞，造成满腔堵料；2)驱动槽轮转动的三角皮带过松，造成皮带打滑；3)偏心轴紧定衬套松动，造成机架的轴承座内两边无间隙，使偏心轴卡死，无法转动；4)工作场地电压过低，主机遇到大料后，无力破碎；5)轴承损坏。
而且推力板一般都采用锻造成形，不经机械加工而直接安装使用。因为锻造误差、工艺和材质等诸多因素的影响，使以推力板为保险件的保护点具有很大的离散性。
工作原理工作时，在电动机的带动下，转子高速旋转，物料进入好的破碎腔与转子上的板锤撞击破碎，然后进入第二破碎腔。在破碎过程中，不但形成了物料与板锤及衬板之间的撞击破碎，同时也完成了各个板锤间以及破碎腔内进行的石打石整形。
在矿山中，它多半用于对坚硬或中硬矿石进行粗碎和中碎。随着电动机连续转动而碎石机动颚作周期性地压碎和排泄物料，实现批量生产。
建国以来到“八五”期间，全国共探明储量。
各时期储量增长见表。根据排矿方式同，可分格子型和溢流型两种。①密。硬度的尺度有两类，一类是正确硬度，另一类是莫氏硬度一种相对硬度。
莫氏硬度以常见的十种矿物来作为标准用相互的刮擦以区分孰硬孰软，习惯上矿物学或宝石学上都是用莫氏硬度。找出合理的工艺及设备来处理磁铁矿物对于我们国家矿山的发展及整个钢铁业的发展都有着极为重要的意义。给炼铁创造了有利的条件，同时也发展了矿山机械。有很多技术和工艺可以提高沥青搅拌设备的节能排放水平，如冷料输送系统、除尘系统的变频控制技术，二次燃烧技术和冷料预处理工艺等，但采用这些技术会增加设备的采购成本。
堆料场骨料储存量大于总量的一半时方可进行运输，运输时装载机由边缘向中心推进，以防止级内骨料的分离。整体铸钢轴承座能够保证与碎石机架完全配合，同时也大大增强了轴承座的径向强度，而分体式轴承座则不拥有该优点。采用有限元分析技术，碎石机具有更高的强度。分料器固定在涡流破碎腔的上部圆柱段，叶轮高速旋转产气愤流，在涡流腔内通过分料器，叶轮形成内部自轮回系统。
叶轮将物料加速到60－75米/秒的速度抛射出去，首先与瀑落的物料形成撞击，然后冲击到涡流衬板和衬料上再次撞击。急剧氧化时每克放热，铝是延展性金属，易加工。金属铝表面的氧化膜膜透明且有很好的化学稳定性。成品粒度可按照用户的需求进行组合和分级，为保护环境，可配备辅助的除尘设备。
郑州黎明机械设备有限公司认为牢牢把握住市场的动态可以方便企业进一步培育新的市场。预计“十二五”期间，全喂入水稻机市场保持持续增长态势，“十二五”末年需求总量将达到5万台以上（这里指1.3米割幅以上履带式产品），并且基于HST液压操纵基础上的“纵轴流”和“双滚筒”机型将占据主导。上海黎明重工机械有限公司是专业的碎石机厂家，在长期的生产经营过程中，我们一直把客户的利益放在好的位。中的主要杂质为碱金属碱土金属和铁钛等的氧化物以及一些有机物。
各种氧化物均起助熔作用，会降低原料的耐火度，因此，中杂质含量尤其是和含量越低，其耐火度越高。
Henan LIMING Heavy Industry Science and Technology Co. LTD which mainly manufacture large and medium-sized crushing and grinding equipments was founded in 1987. It is a modern joint-stock corporation with research, manufacturing and sales together. The Headquarter is located in HI-TECH Industry Development Zone of Zhengzhou and covers 80000 m ². Another workshop in Shangjie Industry Park covers 67000 m ². Over the more than 30 years, our company adheres to modern scientific management system, precision manufacturing, pioneering and innovation. Now LIMING has become the leader in domestic and oversea machinery manufacturing industry.
LIMING brings a large number of high-qualification talents together. Bai Yinghui, general research and development engineer, is a well-known expert in crushing and grinding area who won the youth medal of technology of the state council and receives special government allowance. LIMING owns an experienced service team, offering the customer free design and professional skill training and live guide for installation and debugging. The company's service networks have spread all over the country. Established client files, and mix the traditional door-to-door service with online service together, complementary the advantages. LIMING has won high recognition from clients.
The company mainly manufactures mobile crushers, stationary crushers, sand-making machines, grinding mills and complete plants that are widely used in mining, construction, highway, bridge, coal, chemical, metallurgy, refractory matter, etc. Product quality is life, and scientific innovation is motive power. LIMING got ISO international quality system certification, European Union CE certification and Russian GOST certification. The company has strong research and development strength and innovation.
LIMING machinery research institute was founded in 2005 which is the most powerful comprehensive technological research institute in the domestic mining machinery industry and provides top scientific research platform for professional personnel. Up to now, LIMING has won 10 national patents, 24 national utility model patents and 3 provincial science and technology achievement awards. The company products remain the international leading level by strengthening international exchanges and cooperation all the time, and has won a wide range of international market, such as Russian, Azerbaijan, Kazakhstan, Turkey, Kuwait, South Africa, Egypt, Vietnam, Malaysia, India, Australia, Korea, Canada and European Union,etc.
Through more than 30 years' hard work, LIMING's staff built supremacy of credibility, excellent quality, service "LIMING" brand, and has made outstanding contributions to the development of mechanical manufacturing industry for China and the whole world.
