Displaying items by tag: Limestone

Pakistan: Popular Cement Industries has won a court case against Gatron Group, which the cement company claimed was intruding upon a mine held under lease by it. The Business Recorder newspaper has reported that Gatron Group began construction of a partition wall across the mine. The judge ruled that Popular Cement Industries inherited its lease from Dadabhoy Cement in 1986.

China: Xinjiang Tianshan Cement has announced plans to invest US$300m into its new materials subsidiary Chizhou CNBM New Materials. The company says that it has increased its planned investments in its Hengshan limestone mine project by 15% to US$1.58bn from US$1.37bn.

India: Protestors have halted mining operations at JSW Cement’s Khatkurbahal mine in Odisha, which serves the company’s Sundargarh cement plant. The New Indian Express newspaper has reported that the protestors accuse the company of mining and dumping overburden on neighbouring agricultural land, damaging properties with debris from blasts, drying up six wells and creating excessive dust pollution. The protestors also complained that the mine has failed to create new jobs for local people.

Saudi Arabia: Arabian Cement says that the Jeddah Commercial Court has ruled in its favour in a lawsuit it filed against Emaar, the Economic City Company, to claim outstanding quantities of limestone it was due in an agreement the companies signed in 2012. The court has ordered Emaar to give Arabian Cement around 4.6Mt of limestone. As part of the deal, from 2012 to 2018, Emaar agreed to provide the cement company with 44.7Mt of limestone. However, Arabian Cement maintains that it did not receive 5.3Mt of the total.

Arabian Cement previously gave land to Emaar in return for a limestone supply deal. Emmar company has been developing the King Abdullah Economic City.

India: The Tamil Nadu Federation of Panchayat Presidents, an overarching organisation for local government leaders, has begun a protest against unlawful cement plant practices in the state. The New Indian Express newspaper has reported that the federation’s president Sellam Kadamban said that limestone mines and trucks are operating illegally, creating pollution and traffic collisions.

Zimbabwe: Livetouch Investments plans to invest US$100m in the construction of an integrated cement plant. The Herald Zimbabwe newspaper has reported that the group plans to establish the new facility in phases, with the first phase costing US$15 – 20m. The phase will include the exploration of possible locations for the plant with suitable limestone resources, which could then also supply its Redcliff grinding plant. The grinding plant currently imports 4000t/yr of Zambian clinker and also buys raw materials from Lafarge Zimbabwe.

Managing director Kyle Wang said “We are still limited by the limestone resources in the country.” He said that the company has identified ‘good limestone deposits’ in Rushinga, Nyamapanda, Bulawayo and Masvingo, however “The problem with some of the limestone is the quality.”

Germany: The Ministry for Economy and Climate Protection has presented HeidelbergCement with its German Climate and Environment Innovation Prize (IKU) for its ReConcrete-360° concrete recycling process. The process retrieves hardened cement paste from waste demolition concrete for use in place of limestone in clinker and cement production. The recycled material can also bind CO₂ to act as a carbon sink.

Global research and development Wolfgang Dienemann said “With ReConcrete-360°, we have succeeded in developing a limestone substitute from demolished concrete that also allows us to use the carbon-containing exhaust gases from cement production. A small revolution with a big impact: In Germany alone, the CO₂ savings potential of this process is 10Mt/yr. The IKU award underlines that we can be proud of our pioneering innovation.”

Sweden: UK-based Samson Materials Handling is supplying an Eco Hopper product for installation at the Port of Slite in Gotland. The hopper will be designed to receive clinker, limestone, coal and refuse-derived (RDF) fuel pellets. These materials will be unloaded at the quay area via crane grabs. The hopper will then discharge direct to trucks via a telescopic chute.

The Eco Hopper installation under normal operating conditions and based on the client’s grab sizes and cycle time, will achieve peak discharging rates of: 353t/hr - based on clinker with a bulk density of 1.4 t/m³; 454t/hr - based on limestone with a bulk material density range of 1.8 t/m³; and 420t/hr - based on RDF Pellets with a bulk material density of 0.6 t/m³.

The Eco Hopper product design concept comprises of a specialised reception hopper unit incorporating Integral filter arrangement with a reverse jet filter media cleaning system which returns all material back in to the material stream. In addition, the inlet system of the hopper is based on the Samson Flex-Flap design which reduces the volume of air necessary to control dust both from the opening grab and displaced air from material falling into the inner hopper below. This contributes to the reduction of airflow reducing filter and power requirements of the equipment.

Commissioning and operator training will be provided by Aumund Group Field Services.

Dominican Republic: Colacem Group subsidiary Domicem has awarded the contract to upgrade the limestone reclaiming system at its integrated Sabana Grande de Palenque cement plant in San Cristóbal province to Italy-based Bedeschi. The original stacking and reclaiming equipment, installed by Bedeschi in 2004, allows clay and limestone handling at the plant. The upgraded machine will improve the limestone reclaiming system, increasing its capacity from 200t/hr to 360t/hr, the capacity needed in order to feed a new production line that is being installed at the plant.

India: JK Lakshmi Cement has partnered with the Society for Technology and Action for Rural Advancement (TARA) to integrate calcined clay technology into its operations in order to commence production of limestone calcined clay cement (LC3). United News of India has reported that the producer says that this type of composite cement reduces the product's clinker factor by 50% and its carbon footprint by 40%.

JK Lakshmi Cement said "This partnership will be a game-changer for the cement industry, giving impetus to its efforts in mitigating emissions, combating climate change and bringing a holistic change in the surrounding communities to create sustainable livelihoods in large numbers."