修高速公路，最难打交道的往往不是桥和隧道，而是 "料"。桥隧一开挖，山肚子里滚出一堆堆洞渣，这些石头又硬又裹着泥，掺了土根本进不了混凝土；可路基要填、桥墩要浇、路面要铺，哪一样都离不了合格砂石。一边是堆成山的 "废料"，一边是拦不住的上料缺口。石门这个料场，就在这种拧巴里开了工，目标很明确：把人人头疼的脏石头，变成能上高速的合格砂料。

这条路纵贯湘西北，把三峡、壶瓶山、张家界串成一条线，也让武陵山里一个个村镇真正和山外的世界连了起来。路要赶着通车，砂石就得先一步到位。而这条路上相当一部分骨料和机制砂，恰恰来自隧道开挖时留下的洞渣。在很多工地宁愿花钱倒掉的 "麻烦"，在这里被当成了宝贝，石头的身价，被重新掂量了一遍。

料场的活儿看着粗，做起来全是细功夫。原料是外购来的洞渣和花岗岩，块头大的能到半米多，细的几乎成了碎末，全得一并吞进去，经过破碎、整形，吐出来的是机制砂和几档规格的骨料，一天稳稳供出几百吨，源源不断送进高速项目。撑起这条产线的，是世邦成套设备：颚式破碎机打头阵，先把大块头啃下来；单缸液压圆锥破在中段把关，靠液压控制把硬料碎得又匀又省力；制砂机在最后整形收尾，把料形打磨得方方正正。头道压得住大块，中段挡得住硬料，末端磨得出好砂，一环扣一环，谁也别掉链子。

可常德这片山，是典型的石里包泥。洞渣看着是石头，剥开来却裹着好几成泥。泥进了破碎系统，最怕的就是堵，料一堵，整条线就得停下来清，堵上几次，工期不等人，现场急得直跺脚。这怨不得设备，是土和石头在较劲，土不先在进料端拦住，后面机器再好也要被拖累，满线的功夫都得白费。

所以除土这道关口，比谁都紧要。料进场先过筛，把大块的泥壳和细土尽可能隔在系统外面；进了破碎段，筛分留足余量，让夹带的土有地方走、不至于闷在腔里。设备装好是一回事，能不能用顺、用稳是另一回事。世邦的工程师回访那趟，几乎没大动什么机器，而是蹲在现场看料、看筛分、看出土环节扛不扛得住，又和厂里负责生产的人坐在一起，把 "进料端怎么多拦一道土、筛分怎么留足余量、泥多的时候怎么保产量" 这些细节一项项捋清楚。机器还是那批机器，工艺思路调顺之后，堵机少了，整条线顺了，产量稳稳当当落在计划上。临走，工程师还把操作要点和设备检修的窍门教给了现场的人，机器靠得住，人也得会伺候。

如今这条路已经通车，车流往来不断，很少有人会想起脚下压实的那层砂石，是从隧道洞渣里一点点淘出来的。破碎机吞吐过的每一吨石头，最后都变成了路的一部分。石头不会说话，但好不好用、稳不稳定，跑上一阵自己就见了分晓。世邦做破碎这么多年，上心的从来不是卖出去多少台，而是每台机器在工地上站了多久、出了多少活、替用户挡掉了多少麻烦。机器卖出去只是开头，往后每一吨顺顺当当出来的砂料，才是它真正的身价。

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.

现场视频如下：