OvetVigan Engineering S.ANAVTORBühler GmbHMultimodal 2018Docksolid
  • Sailors Society
  • Cimbria Bulk Equipment A/S
  • FLSmidth
  • Bühler GmbH
  • Cleveland Cascades Ltd
  • TBA - Software Solutions & Services for ports, terminals & warehouses

Unique strategy to control dust emissions

(Posted on 24/05/18)

A global leader in conveyor technology has helped mitigate dust emissions at the underground limestone mine of a cement production plant by implementing an innovative transfer point solution. Using a specially-designed dust control unit (DCU) to spray a surfactant onto both sides of the cargo stream during transfer onto the main conveyor, Martin Engineering was able to help Continental Cement Company, LLC, suppress fugitive dust both along the underground belt path and during discharge at the outdoor storage yard. The result was a significant reduction in dust emissions, creating a safer workplace and offering a measurable return on investment.

Continental Cement has been in operation since 1903. Over more than a century, the company has continued to improve and increase operations to reach a current cement production capacity of 1.2 million short tons (≈1.1 mil. tonnes) of clinker annually.

A 350 foot (106 m) underground mine now provides the primary source of limestone, which makes up 75% of the raw material required to produce the meal in the company’s Type I/II, and Type III Portland cement. Yielding 1.6 million short tons (≈1.4 million tonnes) of limestone annually, the extracted material is transported via truck and high-speed conveyors in order to move it to the surface, where it is held in a 100,000 ton (≈91,000 tonne) outdoor storage pile, then processed through a four-stage preheater/precalciner dry process cement kiln.

Fifty-ton trucks dump 600-650 t/h (544-589 mt/h) of extracted limestone into an underground hopper that feeds an impact crusher, which reduces the rocks to 4-in. (101 mm) minus. The aggregate is then loaded onto Conveyor 0, a 60-inch (1524 mm) wide belt traveling approximately 700 fpm (3.5 m/s) for 400 feet (122 m). The rock is discharged through a transfer chute onto Conveyor 1, travelling up the 1,300 foot (400 m) inclined belt to the surface and dropping 20 feet (6 m) onto the outdoor storage pile.

“The two main areas we identified as having unacceptable dust emissions were at the underground crusher hopper and outdoors where the material was discharged onto the stockpile,” explained Environmental Manager Leonard Rosenkrans.

The original dust control equipment followed a traditional approach, with a goal of wetting the surface of the cargo. However, operators learned that limestone dust was not being adequately controlled by the water alone. Martin Engineering representatives visited the site with a trailer containing a fully functional Martin® Dust Control Unit (DCU), allowing a full demonstration of the unit’s capabilities. Conducting an end-to-end walkthrough of the cargo flow, technicians were able to determine the best course of action.

Latest News

Volvo Penta’s 2021 deadline to introduce electric power

(Posted on 15/06/18)

With the aim of becoming a driving force in sustainable power solutions, Volvo Penta is going full charge... Read more


Aumund helps Flying Cement

(Posted on 15/06/18)

Flying Cement, a member of the Lahore-based conglomerate, Flying Group of Industries, is planning to... Read more


Martin trains Tata Steel staff

(Posted on 15/06/18)

A global leader in bulk handling equipment has helped one of the largest steel manufacturers in the... Read more


JDN goes for remote control hoists

(Posted on 15/06/18)

J D Neuhaus, manufacturer of air hoists, cranes, trolleys and monorail hoists, has further enhanced... Read more


Phoenix Lighting retrofits Mobile Harbor Cranes at RAK Ports

(Posted on 08/06/18)

Phoenix Lighting has been selected by RAK Ports to provide EcoMod 2 LED floodlights to retrofit both... Read more


Replacing rope cranes

(Posted on 08/06/18)

A few years ago the first E-Crane was installed in Desa Muara Kaman, Kota Bangun, situated... Read more


Superior’s open house

(Posted on 08/06/18)

Superior Industries, Inc., a U.S. based manufacturer and global supplier of bulk material processing... Read more


MacGregor crane ensures continuous loading and discharging for floating crane barge

(Posted on 08/06/18)

MacGregor, part of Cargotec, has signed an order with Armada Rock Karunia (ARK) for a MacGregor heavy... Read more


WSS lifts off with Airbus

(Posted on 08/06/18)

Pairing Wilhelmsen’s extensive ships agency expertise and robust safety standards, with Airbus... Read more


New Liebherr LHM 420 for Shannon Foynes Port

(Posted on 31/05/18)

Shannon Foynes Port Company (SFPC) has recently taken delivery of a new Liebherr Mobile Harbour Crane... Read more


Port of StocktonThe Maritime Standards Awards 2018TOC EventsTelestackCimbria Bulk Equipment A/STBA - Software Solutions & Services for ports, terminals & warehouses
  • TOC Events
  • Docksolid
  • Stemm

Subscribe to our newsletter

Keep up to date with the latest global news in bulk cargo handling and shipping