Hatch is a global multidisciplinary management, engineering and development consultancy. Its group companies have more than 11,000 staff in 65 offices on six continents. In 2009 it was one of the 100 largest companies in Canada, with sales over CDN $1 billion.The company was founded in Toronto, Canada, by W.S. Atkins as W.S. Atkins & Associates in 1955. The company initially was involved in subway tunneling and other civil engineering projects, and expanded into metallurgy when Gerry Hatch joined the company in January 1958. It became known as Hatch in 1962. Hatch counts among its metals clients the top 20 mining and metals companies in the world, including Alcan, Alcoa, BHP Billiton, Barrick Gold, BlueScope Steel, Xstrata , Vale and Rio Tinto.In 1996 the company began an expansion program by purchasing several aligned engineering companies including Billiton Engineering , Rescan Mining , BHP Engineering , Kaiser Engineers , Acres International , and MEK Engenharia . By 2005 the combined billing of the company was around CDN $700 million.Hatch today provides consulting, operations support, technologies, process design, and project and construction management to clients in three principal sectors: mining and metals; energy; and infrastructure.The company's main offices are in Canada, Australia, South Africa, Chile, China, Brazil, Peru, Russia, United Kingdom, and United States. They also have several smaller offices around the globe. Wikipedia.
Bolen J.,Hatch Ltd.
Minerals and Metallurgical Processing | Year: 2014
The iron ore induration or pelletizing process emits particulates, sulfur dioxides (SOx), nitrogen oxides (NOx) and other pollutants depending on trace elements in the orebody and fuel. Typical emission levels for these compounds during induration will be outlined, and corresponding options for pollution control equipment described. Recent pellet plant construction in Sweden and the United States feature modern pollution controls - circulating fluidized beds for sulfur control, activated carbon for mercury control and electrostatic precipitators (ESPs) or baghouses for particulates. These controls will be described along with the rationale for selection. United States-specific environmental discharge issues such as sulfates in water and the relation to pollution control equipment design will be discussed. Copyright 2014, Society for Mining, Metallurgy & Exploration Inc. Source
Hatch Ltd. | Date: 2014-02-06
Provided is an acid mist control apparatus for the control of acid mist emissions in an electrolytic cell. The apparatus includes an elongate hood having longitudinal edges, an upper surface and a lower surface; and a receiving aperture which is adapted to receive therethrough an anode of an electrolytic cell.
Hatch Ltd. | Date: 2013-02-15
An apparatus connects first and second conduits that convey a flow of gas. The apparatus includes a first flange element fixed to the first conduit, and a second flange element fixed to the second conduit. The flange elements are coupled together to permit fluid communication in an internal environment between the first and second conduits. At least one port is intermediate the flange elements to deliver a flow of purge gas therebetween. The at least one port may be located within a purge gas channel arranged in one of the flange elements. A pressure gradient of the flow of purge gas may substantially prevent at least one of fluid egress from the internal environment and fluid ingress from an external environment. Purge gas distribution systems and related methods are also described.
Hatch Ltd. | Date: 2013-08-21
A method is disclosed for controlling retention time in a reactor, such as an autoclave, having a plurality of compartments separated by dividers with underflow openings. A retention time of the reaction mixture is calculated and compared with an optimal retention time, and the volumes of the reaction mixture in the compartments are adjusted while maintaining the flow rate of the reaction mixture, so as to change the retention time to a value which is closer to the optimal retention time. The reactor may include a level sensor in the last compartment for generating volume data; a control valve for controlling the liquid level in the last compartment; and a controller which receives volume data from the level sensor and controls operation of the control valve.
Agency: Cordis | Branch: H2020 | Program: RIA | Phase: SC5-11a-2014 | Award Amount: 8.56M | Year: 2015
BioMOre describes a New Mining Concept for Extracting Metals from Deep Ore Deposits using Biotechnology. The concept is to use hydrofracturing for stimulation and bioleaching for winning of ores. The final process will consist of a so-called doublet, which is two deviated and parallel wells. In order to avoid high costs for drilling from the surface, the BioMOre approach is divided into two phases. Phase 1 will be research on the intended bioleaching process whereas phase 2 will aim at a pilot installation to demonstrate the applicability of the process in large scale including hydro-fracturing and access of the deposit from surface. The first phase should cover the intended work of the current BioMOre approach without drilling from surface. The BioMOre project aims at extracting metals from deep mineralized zones in Europe (Poland-Germany, Kupferschiefer deposit as a test case) by coupling solution mining and bioleaching. Selected sustainability indicators based on regulatory requirements of the European Commission will be applied for feasibility considerations. The main objective of the BioMOre first phase is to design and build an underground test facility for testing the concept of combined hydro-fracturing and bioleaching. The test facility will comprise a 100 m ore block, where boreholes will be drilled horizontally using standard equipment. All necessary equipment for testing different parameters of the intended bioleaching process will be established underground. The intention is to test the bioleaching process in high detail in an in-situ environment at the same time avoiding time consuming and risky permission procedures. On the other hand, the application for the permission of underground test operation must contain detailed information about monitoring of tests and all material controls. No harmful substances will remain in the mine after the tests are completed. Further to that, predictive numerical modelling of a pilot installation should be done.