Displaying items by tag: Mill

Iran: Gebr Pfeiffer has released information about a MVR 4250 R-4 raw mill that will be installed at Biarjaimand Cement Company. The raw mill, with an installed drive power of 3000kW, is designed to grind 280t/hr of cement raw material to a product fineness of ≤ 12 % R 90µm. The contract was awarded in September 2016 and the order was placed through the Chinese general contractor Beijing Kaysun Trading, a subsidiary of CATIC based in Beijing. Gebr Pfeiffer staff will also supervise erection and commissioning. The delivery of the equipment is scheduled to start in the second half of 2017.

Nigeria: Loesche has released details on its order for the United Cement Company of Nigeria (Unicem) cement plant at Mfamosing, near Calabar in Cross River State, which was commissioned in September 2016. The order was for two vertical roller mills (VRM): one type LM 60.4 for grinding cement raw material and one LM 70.4+4 CS, the biggest Loesche VRM built for grinding cement clinker.

Loesche worked with Renk to develop the Compact Planetary Electrical (COPE) drive due to the high power requirements of the LM 70.4+4 CS mill. This mill was designed for a capacity of more than 370t/hr to a fineness of 4700 Blaine that required a drive system that could power it up to 8800kW. So the COPE system was designed for mill drive powers ranging from 4000 – 15,000kW. The COPE gearbox is also equipped with eight individual drive units, which are each designed for a capacity of 8800kW, allowing for redundancy in case of unit failure.

Other notable highlights of the installation that Loesche have highlighted include the equal size as standard drive units for VRMs that allow for the exchange of conventional gearboxes with the setup. The installation is also the first usage of an eight-drive unit in a VRM gearbox and the first time a multiple drive in a VRM can operate with or without a variable frequency drive.

Delivery of the order started in October 2015. First production of cement on the new production line began in September 2016. The new line increased the plant’s cement production capacity to over 5.5Mt/yr from 2.5Mt/yr. It was built by China’s CBMI Construction.

Austria: A Tec has commissioned a Rocket Mill RM 2.50 for ASA at its waste treatment plant in Wiener Neustadt. The mill has a capacity of 7 – 40t/hr and is equipped with two grinding chambers, which can be independently loaded. Each one has a main drive with 315kW. Due to the grinding technology, it also has an additional drying effect of approximately 10%. The mill is designed to produce refuse-derived fuels (RDF) with an output size of 5 - 80mm from pre-sorted and shredded household and commercial waste. It was principally built at A Tec’s plant in Eberstein.

Turkey: Korfez Eng. has signed an order with a cement producer to supply a new shell lining system. The scope of the order is a complete replacement of a wear shell lining for a single-compartment mill with an effective grinding length of 4m and 14.5m, the mill discharge and complete new manhole covers in modified execution. The complete lining is of a wave profile type WAVE 35/50 in a highly wear-resistant steel castings with 27% chromium content. The complete contract scope will be completed and delivered within a month and a half.

Egypt: The Arabian Cement Company plans to spend US$5.7m on a new coal mill for its Suez cement plant. The upgrade is intended to increase production capacity at the site, according to the Daily News Egypt newspaper. At present the plant is operating at 60% capacity by using one coal mill. It imports coal from Europe, China and South Africa through the Dekheila Port of Alexandria and Adabiya Port in Suez.

The cement producer reported that its net profits fell by 36% year-on-year to US$8.97m in the first nine months of 2016 from US$14.1m in the same period in 2015. It blamed this on foreign exchange rates and a drop in sales due to technical problems at the plant.

France: Ecocem France has ordered a Loesche type LM 46.2+2 CS mill for a slag cement grinding plant that it is building in Dunkirk. It follows a previous order by Ecocem of a LM 46.2+2 CS mill for the dry grinding of ground granulated blast furnace slag (GGBFS) at its plant at Fos-sur-Mer.

The LM 46.2+2 CS for the plant in Dunkirk is designed for the grinding of cement clinker and granulated blast furnace slag at a capacity of 105t/hr GGBFS. The gearbox will have a capacity of 3150kW.

All the mechanical equipment for the grinding plant starting from mill feed to the product discharge into the product silos is included in the Loesche scope of supply. The Loma heater type LF 28-L will be a full-inlined type designed to burn natural gas as well as blast furnace gas. The burner supplied by Loesche will be the MSBZ type, complete with fitting rack and local switch cabinet.

The lead-time for the main components of the mill and for the additional units included in the scope of supply is 6 to 13 months. The commissioning of the vertical roller mill is planned for the middle of 2017.

Ecocem’s grinding plant will be installed close to Arcelor steelworks for use of their granulated blast furnace slag. This LM 46.2+2 CS will be the seventh Loesche vertical roller mill installation for slag and cement grinding in France.

India: Star Cement has ordered upgrades for the 70t/hour ball mill, with a diameter of 3.6m and length of 11.9m, at its plant in Meghalaya from KHD. The equipment manufacturer will supply a roller press RP7-170/90 along with an SKS VC 3000 separator, which will increase the grinding capacity of the current ball mill by more than 100%. This will achieve a total guaranteed production capacity of 150t/hour for Pozzolanic Portland Cement at 3600 Blaine. The upgraded circuit is to be commissioned by 31 March 2017.

Djibouti: Gulf Agency Services has shipped a cement ball mill and its components to Djibouti, according to Breakbulk. The mill was shipped from Jebel Ali, UAE to the Port of Djibouti. Gulf Agency Services is an associate company of Maritime Transport International that is base in Djibouti.

Lebanon: Intercem is building a hot gas system for a coal mill at the LafargeHolcim Chekka plant. The engineering company won the contract for the job in 2015. It is the second such contract for Intercem to build a hot gas system following a previous project at a plant in Jordan in 2013.

The new hot gas system in the coal mill plant in Chekka connects the preheater with the coal mill and comprises a hot gas duct with a length of 360m and a diameter of 900mm. The process data of the hot gas outlet of the heat exchanger are of 18,500Nm³/hour at 400°C.

The turnkey scope of supply and services for the project includes:

• Project management
• As-built-survey of the existing plant using 3D-Laser scanning
• Review of the statics of the existing steel structure and concrete construction
• Process- and detail engineering
• Supply of the mechanical equipment including steel structure
• Coordination of the locally produced components
• Supply of the electrical equipment including clarification of connections and integration into the existing control systems
• Execution of the complete foundation works
• Transport management
• Electrical and mechanical assembly of the plant
• Commissioning of the hot gas system
• Training of the operating team

In addition ducts, a cyclone, a process fan and several control dampers, compensators, the complete instrumentation and automation as well as a new recirculation duct with two control dampers at the existing vertical coal mill have been supplied.

Handover to the customer is planned for fourth quarter of 2016.

Vietnam/Germany: Loesche GmbH has won an order for a new cement grinding plant in Ha Nam. The customer is Xuan Thanh Cement Joint Stock Company, a private company group (est. 1976) in Vietnam with more than 30,000 employees. In December 2015, Xuan Thanh Cement decided to invest in a new cement line from FLSmidth. Germany's Loesche GmbH, however, was chosen for the delivery of the cement mills.

After Loesche had already supplied a vertical roller mill for the first cement line in the same plant, Xuan Thanh JSC placed the order for the construction of the new grinding plants with two cement mills with Loesche once again.

During the signing ceremony, Mr Nguyen Xuan Thuy, General Director of Xuan Thanh Cement JSC, thanked Dr Thomas Loesche on behalf of the Xuanh Thanh Group. The contracting partners discussed future developments and confirmed their interest in continuing to work together on a long term basis.
The challenge of this project for Loesche lies in the integration of the new grinding plants into a cement line which is presently under construction.

The key elements of the scope of supply are two cement mills type LM 56.3+3 CS. In addition to the two cement mills, Loesche is also supplying further plant components, from the fresh material supply, the product filter and the mill fan to the finished material transport to the product silos. Loesche Automatisierungstechnik GmbH will be the supplier for the electric part and the automation of the grinding plants. Two hot gas generators type LF 20 L are designed to provide the product moisture guaranteed in case of kiln standstill. An extensive engineering package provided by Loesche will conclude the scope of supply.

Xuan Thanh cement plant will thus be fitted with state-of-the-art equipment for low energy consumption and for reduction of emission values to European standards. The lead time for the entire package is eleven months. Commissioning is forecasted for the second quarter of 2017.