Displaying items by tag: grinding plant

UAE: Al Ain Cement and National Cement have signed a clinker offtake deal. Al Ain Cement, a subsidiary of Arkan Building Materials, will supply clinker to National Cement’s grinding plant in Abu Dabi, according to Gulf Today. The agreement is also intended to help both companies reduce production and logistics costs. The two companies have a combined production capacity of 3.1Mt/yr of clinker and 6.6Mt/yr of cement.

Sri Lanka: Lanwa Sanstha Cement has ordered two MVR 5000 C-4 type roller mills from Germany’s Gebr. Pfeiffer. The vertical roller mills will be used for the production of various cement types based on clinker, gypsum, granulated blast-furnace slag and fly ash. The end customer is part of Onyx Group, which mainly operates in Sri Lanka and the UAE. The contract was signed in February 2019. No value for the order has been disclosed.

Most of the components of the grinding plants will be supplied by Gebr. Pfeiffer (India). The core components of the mills - including the grinding rollers, the tension systems and the gear units - will come from Europe. Gebr. Pfeiffer (India) will also provide the entire engineering for the grinding plants and make available staff to support and supervise the erection and commissioning and assist with the performance test. The two grinding plants will each produce about 180t/hr of Ordinary Portland Cement (OPC) ground to a fineness of 4000cm²/g acc. to Blaine and they will be set up at staggered intervals. Delivery of the first plant is slated for the end of 2019 and scheduled to be commissioned in the second quarter of 2020.

Kenya: Savannah Cement is set to complete US$50m upgrade to its grinding plant at Athi River by the end of 2019. It is installing a second 1.2Mt/yr mill at the unit supplied by Denmark’s FLSmidth, according to the Kenya Broadcasting Company. Contractors are also installing belt conveyors, storage silos, a packing plant and dust filters as part of the new vertical roller mill line.

The cement producer made the announcement at an event celebrating its seventh anniversary. The existing mill at Athi River has a production capacity of 1.2Mt/yr.

Togo: Eric Goulignac, a regional director of HeidelbergCement based in West Africa, says that the company believes in the local market despite competition. He expressed confidence due to the quality of its products, according to Télégramme228. The building materials producer is currently finalising a call for tenders for a Euro25m upgrade to its operations, including a new mill, at Cimtogo’s cement grinding plant in Lomé and a photovoltaic (PV) solar energy plant.

Philippines: Big Boss Cement has reportedly stopped plans to build a new grinding plant at Bamban in Tarlac province following a series of protests by local residents. Local mayor Jose Feliciano said the cement producer had withdrawn its US$117m investment, according to the Philippine Daily Inquirer newspaper. The project was going to be built an agricultural land around 0.5km from a school with 4000 students. However, Feliciano noted that the loss of the factory would reduce local municipal funds.

Somaliland: Oman’s Raysut Cement has agreed to build a 1Mt/yr grinding plant with MSG Group. The project will have an investment of US$40m. Raysut Cement will own 55% of the joint venture with MSG Group holding the remainder. Raysut Cement previously had plans to build a cement terminal in the country with Barwaaqo Cement Company.

Charah Solutions has been steadily building up its fly ash distribution business in recent years with an eye on the supplementary cementitious materials (SCM) market. This week it opened the third of its new series of SCM grinding plants, at Oxnard in California, US. The unit sticks out because it is focusing on grinding natural pozzolans. The plant will receive natural pozzolan by truck and rail and then use Charah’s patented grinding technology to produce pozzolan marketed under its MultiPozz brand. The previous plants in this series mentioned natural pozzolans but this is the first to promote it explicitly.

The change is potentially telling because global demand for granulated blast furnace slag (GBFS) outstrips supply. Both performance benefits and environmental regulations are pushing this. It’s a similar situation for fly ash, also driven by trends to close coal-fired power stations in some countries. As Charles Zeynel of SCM trading firm ZAG International explained in the March 2019 issue of Global Cement Magazine, “...volcanic pozzolans are a potential SCM of the future. This is gaining traction, but it’s slow progress at the moment. This will be the answer for some users in some locations.”

The problem though is that natural pozzolans are down the list of preferred SCMs for their chemical properties after silica fume, GBFS and fly ash. The first is expensive but the latter two were traditionally cheap and easy to obtain if a cement or concrete producer had access to a source or a distribution network. Natural pozzolans are very much subject to variations in availability.

It’s no surprise then that Charah is promoting natural pozzolans in a Californian plant given that state’s environmental stance. It’s unclear where Charah is sourcing their pozzolan from but they are not the only company thinking about this in the US. Sunrise Resources, for example, is working on the environmental permits for a natural pozzolan mine near Tonopah in Nevada. As it described in its company presentation, California and Nevada are the most affected states in the fly ash supply crisis because they are, “...at the end of the line when it comes to rail deliveries from power stations in central and eastern USA.” It also estimated that California used 0.9Mt of pozzolan in its cement production of which about 90% is fly ash. The state produced 9.6Mt in 2015. Other companies are also mining and distributing natural pozzolans in the US as the website for the National Pozzolan Association (NPA) lists. Although, if this line-up is comprehensive, then the field is still fairly select. Most of these companies are based in the west of the country.

One last thing to consider is that various groups are tackling a potential future lack of SCMs for the cement industry by making their own pozzolanic materials through the use of calcined clay. These groups include the Swiss-government backed LC3 project and Cementir’s Futurecem products. Using clay should bypass the supply issues with natural pozzolans but the cost of calcining it requires at the very least an investment to get started.

As concrete enthusiasts often point out, a variant of pozzolanic concrete was used by the Romans to build many of their iconic structures, some of which survive to the present day. To give the last word to the NPA, “What is old is new again: natural pozzolan is back!” If environmental trends continue and steel and coal plants continue to be shut then it might just be right.

Chile: The Servicio de Evaluación Ambiental (SEA), the country’s environmental body, has approved the environmental impact assessment for a new 0.5Mt/yr grinding plant that Melón is planning to build in Punta Arenas. The unit will have an investment of US$45m, according to the Diario Financiero newspaper. Spain’s Cemengal will supply the mill for the project.

Poland: FLSmidth MAAG Gear has successfully tested a MPU/274G type gear unit at its Elblag production plant. The product is intended for JK Cement’s new cement grinding plant in Aligarh, Uttar Pradesh. Shipping is scheduled for late June 2019. No value for the order has been disclosed.

France: Cem’In’Eu has obtained NF hydraulic binders certification for its Aliénor plant in Tonneins from the Technical Association of Hydraulic Binders. It covers CEM I 52.5 R cement. The cement producer is currently seeking NF certification for other types of cement in its product range. The latest certification follows ISO 9000 and ISO 14000 accreditation at the cement grinding plant.