Material Handling of Highest Complexity

Raw Materials Handling

Material Handling of Highest Complexity

Large-scale Raw Materials Handling at Bushan Steel's Integrated Steel Plant
For the expansion of Bhushan Steel’s steel plant at Meramandali, India, Larsen and Toubro carried out the design, engineering, supply, erection, testing and commissioning of the raw material handling system that included 43 kilometres of belt conveyors, a wagon and truck unloading system, eight stacker/reclaimers and three bucket wheel reclaimers.
(ed. WoMaMarcel - 09/10/2015)
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Operational Scheme

Based on the flow of material, the complete RMHS at Bhushan Steel is packaged into various systems such as base blending system for sinter plant, coal and coke handling system for coke oven, blast furnace stock house and charging conveyors, yard machines, wagon unloading equipment and associated conveying system and slag handling system. In addition to these systems, RMHS work for Bhushan’s captive power plant and coal washery was also carried out by L&T. The major scope (see Table 1) and working of each system is covered in the following sections.

Table 1: Major scope of the Bhushan Steel material handling project.

Wagon Unloading System

Run-of-Mine (ROM) coal, imported coal, limestone, dolomite and iron ore are unloaded by five Rotaside wagon tipplers (three by others) and the truck unloading system and are sent to stock yard through series of belt conveyors. In hauling of loaded wagons, placement and out hauling of empty wagons is done by rack and pinion type side arm charger (one for each tippler). The raw materials unloaded from each wagon tippler are drawn by two nos. Apron feeders installed below the hoppers and fed on to the conveyors below.

ROM coal is also unloaded at two track hopper complexes (twin type, 210 m long) with four traveling type paddle feeders in each complex, see Fig. 3. The track hopper unloads material from bottom discharge type wagon by opening gates pneumatically/manually and the same is fed onto four underground belt conveyors at the bottom of track hopper complexes.

Fig. 3: Cross section of the twin track hopper complex.

The material received from both the track hopper and wagon tippler stream will be fed onto conveyors for transportation to stockyard via junction towers.

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