We have made belt transport more efficient for the Ledvice Coal Treatment Plant

ZAT has been operating in the field of surface coal mining for almost 60 years. Although the Green Deal has recently abandoned its incineration, operations in the Czech Republic will require modernization and maintenance for several years to come.

ZAT offers operators of surface lignite mining both the deployment of its own modern control systems and the professional implementation of control systems from other suppliers. "We have long-term competencies and a number of reference orders, and at the same time we can meet the specific requirements of our customers," says Milan Hucl, director of the Smart Systems division.

Ledvice Coal Treatment Plant project

An example of the successful implementation of ZAT is the deployment of a control system from Siemens at the Ledvice Coal Treatment Plant, which belongs to Severočeské doly a.s.

The aim of this important investment project, in which several suppliers of mechanical and electrical parts were involved, was to streamline the belt transport of coal through the installation of new interconnection line technology. The essence of streamlining was the separation of the already finished product Walnut 2 during its production and targeted focus on loading for trucks in connection with the increased demand of the product on the market.

The course of implementation

ZAT participated in the project by supplying a control cabinet, including the installation of a control system and related field instrumentation, as well as the development of application software and relevant project documentation for the control of belt conveyors. From the control point of view, it was an above-standard large range of the number of processed signals.

In accordance with the customer's request, the Siemens S7-1500 industrial control system with inputs and outputs was used to control the newly supplemented interconnection line technology. However, the addition of new machine technology also required extensive modifications to the existing ZAT machines, which control the following technological equipment and which communicate with each other. The contract was completed and successfully put into operation at the end of 2021.