Maerz News

The main technical issue in the December 2012 edition of “Maerz News” is an article by Matthias Vette, Vattenfall Europe Mining AG, Germany, published in World Cement in August 2012, on the use of pulverised lignite on Maerz lime kilns. In 1972 two 450 tpd Maerz lime kilns were installed in ZPW Trzuskawica’s Kujawy lime plant, being the first PFR type kilns built in Poland. After a complete revamping, engineered by Maerz in the late nineties, the kilns, initially fired with heavy fuel oil, were converted to natural gas firing in 2006. With the aim to further increase operating flexibility and to lower operating costs, a new solid fuel firing system has recently been installed on kiln No. 1 which is now successfully operating with pulverised lignite. As usually, reports on recently implemented lime kiln projects and new orders received are complementing the “News”.

The technical focus in the June 2012 edition of “Maerz News” is the POLCID® - SIMATIC PCS 7 process control system currently installed by default on Maerz Lime Kilns. This system allows an enhanced operating reliability and consequently a reduction of operating and maintenance costs. At the same time, increased operating reliability results in an increase in product quality. Expansion projects in the Peruvian copper mining industry implicate a higher demand for lime required in the beneficiation process of copper ore. To meet the increased demand for lime, two Peruvian companies – Cal del Centro and Cemento Sur – have signed contracts with Maerz for the installation of a total of 6 PFR Lime Kilns in Toromocho and Juliaca. As usually, reports on recently implemented lime kiln projects and new orders received are complementing the “News”.

The technical focus in the December 2011 edition of “Maerz News” is the improved design of the Maerz HPS single shaft kiln. HPS means High Performance Shaft kiln, describing one of the key features of this kiln type, i.e. the very high production capacity in relation to the kiln size. The HPS kiln is the perfect option to choose for the production of sandlime and aerated concrete bricks requiring hard burnt, low reactivity quicklime and in the PCC manufacturing industry, where a continuous flow of off-gases with a high CO₂ content is required. Mexico currently being one of the most dynamic lime markets in the world, you’ll find an updated round-up on Maerz’s activities in this country. As usually, reports on recently implemented lime kiln projects and new orders received are complementing the “News”.