Displaying items by tag: Mill

Myanmar: South Korea’s Yojin Construction & Engineering has placed an order for two cement mills from Loesche for installation in Myanmar. The order for a cement and slag mill is Loesche’s first in the country. The mills will be used at a grinding plant owned by Yojin Myanmar Engineering in Thilawa. They will each produce 75t/hr of cement with a fineness of 3300 Blaine. Operation is scheduled for mid-2017. Yojin is building its new grinding plant in the Thilawa Special Economic Zone south-east of Yangon. The site has an ambition to produce 1Mt/yr of cement.

Egypt: Hoffmeier Industrieanlagen has delivered a ball mill to Misr Beni Suef Cement. The mill has a diameter of 6m, a length of 17.3m and its weighs 190t. The installation of the mill will start in April 2017 and is to be commissioned by the end of the year. Hoffmeier will also support the customer with its installation knowledge during the assembly phase. The German engineering company produces industrial heavy machinery including tube mills and rotary kilns.

Malaysia: Engineering company Christian Pfeiffer has released more information about a grinding plant that it completed at the Mambong cement plant for Cahya Mata Sarawak (CMS) in 2016. The engineering procurement and construction (EPC) contract was originally signed in mid-2014 and it also included raw material handling, finished product storage silos and an automated packing plant.

The grinding plant consists of a two-compartment ball mill with a diameter of 4.8m x 15m effective grinding length equipped with a QDK 248-Z separator designed to produce 150t/hr of cement with a fineness of 3500cm²/g according to Blaine. The mill is supported by slide shoe bearings and driven by a lateral drive unit consisting of a girth gear and two pinion gear box with a floating shaft and a 5600kW main motor. The feed materials - clinker, gypsum and limestone - are dosed separately via weigh feeders, while fly ash can be added directly to the separator by a bucket elevator.

The ball mill is equipped with progressive lifting and classifying liners and filled with Allmax grinding balls. The material flow from the first to the second compartment is regulated by a Christian Pfeiffer intermediate flow-control diaphragm in Monobloc design, to ensure an ideal material level and particle size for fine grinding in the second compartment. The fine ground cement leaves the mill by a discharge diaphragm, in a Christian Pfeiffer Monobloc design, and is fed to the separator circuit by a bucket elevator. Separation of the ground cement is achieved by a bag filter application with minimum remaining dust content in the clean gas of below 10 mg/Nm³.

The cement produced is stored in two interchangeable 10,000t silos. One is a mono-cell and the other duo-cell, allowing for the production and storage of three different types of cement. Each silo is equipped with two bulk loading devices for conventional silo truck loading. Cement for the adjacent packing plant is transported via air slides and a bucket elevator. There, it can be filled into big-bags or cement paper bags by a rotary packer at a rate of 3000 bags/hr. At this stage the single packed cement bags can either be directly loaded on trucks or be transferred to a palletiser. The automated palletising system is designed for both pallet and palletless operation.

CMS officially launched the 1Mt/yr grinding plant in late 2016.

Egypt: Misr Beni Suef Cement has delayed the installation of a coal mill at its Beni Suef plant to the third quarter of 2017. Farouk Mostafa, managing director of the company, said that the delay has been caused by a shortage of US Dollars needed to pay to import the mill and its spare parts and general currency variations with the Egyptian Pound that has raised prices, according to Daily News Egypt. The mill was originally planned for December 2016.

Georgia: Gebr Pfeiffer has received an order to supply a mill for HeidelbergCement Group’s Kaspi plant. The vertical roller mill will be used in a new 3000t/day kiln line at the site. The order was placed through the China’s Sinoma Chengdu in November 2016.

The type MPS 4000 B mill, equipped with a SLS 3750 B type classifier, has been designed for a capacity of 270t/hr of raw meal. The mill will be delivered with an enlarged housing to allow the raw material with a moisture of up to 10% to be dried almost exclusively with the available preheater gases.

Commissioning of the plant is scheduled for 2018.

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.