In early 2003, due to the small mechanical stop, the original cement plant will be converted to cement grinding station, in order to improve the market competitiveness, yancheng jianhu county cement BaoAnMing chairman to prepare for the factory original ￠2.2 x 6.5 m cement grinding system. He led a group of production and technical personnel in yancheng local equipment manufacturer, want to replace the original centrifugal classifier (first generation), classifier in yancheng many production enterprises, yancheng jeddah company attracted to introduce improved Sepax efficient classifier, the device using the original O give priority to job grading principle - sepa vortex classifier, and gathered at the same time, each generation of selected powder the advantage such as early edge vortex classifier upper feed, material directly into the classification area, and the classifier as the center feed, lower material, using high-pressure wind ventilation blade was rushed and cleaning after then, material to enter the main classification area. Host around the layout of four cyclone dust collector, finished product collection, bao always think that the equipment is good equipment, is the price of expensive, but ultimately decided to go up on the good, advanced.

December 24, into the factory equipment for installation, the installation personnel was dumbfounded, look at the site to the mill process turns out to be a salesman, mistake in bulk steel library as a dust collector, because early vortex classifier is a negative pressure operation, you must configure dust catcher, and mill no dust, no available precipitator, will not be able to run production equipment.

Is to perform the contract commitment, the company led by general zhu a group of technical backbone personnel, years didn't go home, arrived in cement plant for technical change, ready to go along to closed-circuit circulation, eat live at the scene, at the winter snow, day and night, demolition, installed, process parameter size of nap, balance test repeatedly, the flow field in host after two months of fighting day and night, finally because of wrong fruit, creates vortex classifier can be closed cycle work precedent, broke the O - sepa or combined classifier to configure cloth bag dust collector to collect regular products to work properly, The total power consumption was 40% lower than the former, and the output increased all the way, from 14t/h to 22t/h. In this process, jeddah people and jianhu cement factory people have been fighting side by side, and established a profound friendship.

The plant and in succession in 2004 and 2005, the two sets of ￠2.2 x 6.5 m cement grinding production to 28 t/h of the highest, serve according to the first grinding "day"; In 2007, the factory replaced the first Sepax vortex separator with jeddah's latest generation Sepax efficient vortex separator (due to the early structural reform on the original equipment and the uncertainty of the early wear department, local wear is now serious). The new separator is more reasonable in structure and more stable in technical performance. In the annual customer return visit, jianhu cement factory zhang always hold the hands of jeddah company zhu, looking back, quite deep feeling said: "do forever friends."