Thermal-Mechanical Analysis of a Converter
Client : Norda Stelo
Location : Rouyn-Noranda, Quebec
Year : 2016
Norda Stelo is a consulting firm specialized in all engineering disciplines. As part of this project, Norda Stelo wanted to check the integrity of the converter’s structure because it had sustained permanent deformation while in service.
A first thermal-mechanical analysis was conducted to understand the reason why the external part of the roof was buckling. 3D modelling of the insulation helped to reveal the type of buckling and to make recommendations in order to prevent it from happening.
Thereafter, a second thermal-mechanical analysis was conducted to quantify the impact that the lack of insulation may have during equipment refitting.
Some critical zones were identified and these were the zones where it was impossible to replace the insulation already installed. It was however possible to replace much of the insulation in the equipment while maintaining equipment operation.
LDV Consultants made its recommendations regarding the possibility of maintaining the integrity of the client’s equipment and presented its guidelines as to the refurbishing procedure from a thermal-mechanical point of view.
Modification of the Hoppers in the Meadowbank Mine
Client : Agnico-Eagle Mines Limited
Location : Meadowbank, Nunavut
Year : 2016
Agnico-Eagle Mines Limited is a mining company operating gold deposits in Canada, Finland and Mexico. It has four mines in Canada, which represent the bulk of its production, and the Meadowbank mine located in Nunavut is currently Agnico-Eagle’s largest gold producer. Further to the installation of several hoppers, Agnico-Eagle Mines Limited expressed the need to get technical assistance to ensure the safe use of the hoppers regarded as dangerous.
In this context, Agnico-Eagle Mines Limited mandated LDV Consultants to design structures that would protect the workers when multiple hoppers would be in use. LDV Consultants therefore proposed several solutions to make the unsafe hoppers safer and carried out all the structural analyses required for installation of the new structures on the existing ones.
Analysis of Tank Supports
Client : Orica Canada Inc.
Location : Opinaca, Quebec
Year : 2016
Orica Canada is the world's largest provider of commercial explosives and innovative blasting systems to meet the needs of the mining, quarrying, oil and gas and construction markets.
Orica Canada contacted LDV Consultants because one of its mobile tanks was sustaining recurrent damages always on the same spot. This tank was at times moved by a special truck designed by Orica Canada and then left on the same spot for several days. Orica Canada mandated LDV Consultants to find the source of the problem and recommend solutions to resolve the problem.
As part of its mandate, LDV Consultants carried out the following:
- Evaluate the worst load case (being moved or static);
- Conduct a numerical analysis on the tank;
- Validate through numerical simulation the resistance of the tank support;
- Assess several solutions that could solve the problem;
- Produce the detail drawings needed to manufacture the winning solution.
Owing to its expertise, LDV Consultants was able to identify the actual source of the problem and propose to the client minor changes to be made to the tank without having to incur significant costs.
Client : CFI Metal
Location : Port-Daniel-Gascons, Quebec
Year : 2015
CFI Metal designs, manufactures and installs industrial equipment. During construction of the McInnis Cement plant, CFI Metal was mandated to manufacture hoppers to store industrial products.
As part of this project, LDV Consultants was mandated to design a hopper and conduct an analysis as well as the following:
- Design the hopper while taking into consideration the dimension requirements provided by the client;
- Conduct a summary analysis to help the client prepare its bid;
- Conduct a detailed analysis of the hopper once the client was awarded the contract;
- Take into account the hydrostatic pressure as well as the load on the floor during the analysis;
- Make suggestions as to the bracing required to ensure the integrity of the structure;
- Produce sealed manufacturing drawings as per the analysis.
LDV Consultants was able to provide support to the client during the design of the hopper while limiting manufacturing costs owing to the results of the numerical analysis.
Design of a Cap Press
Client : Orica USA
Location : Watkins, Colorado
Year : 2015
Orica, an Australian company, is the world's largest provider of commercial explosives and innovative blasting systems to the mining and infrastructure markets. Orica is world leading supplier of ground support solutions in mining and tunnelling as well as a leading supplier of sodium cyanide for gold extraction.
Orica mandated LDV Consultants to design a semi-automated press for a laser cap impeller in accordance with the client's specifications.
As part of the mandate, LDV Consultants carried out the following:
- Design the press;
- Produce the manufacturing drawings;
- Produce the installation drawings;
- Program the PLC.
At the end of the mandate, the following deliverables were provided to the client:
- Operational design of the semi-automated press;
- Complete set of engineering drawings;
- Operations manual;
- Maintenance manual including a parts list and the product data sheets.
Design of an access bridge to a crusher pit
Client : Metso Minerals Canada Inc.
Location : Northland, Sweden
Year : 2014
Metso Minerals Canada is a manufacturer of mining production equipment. Metso carried out a mining project in the north of Sweden for which it required assistance services for the design of auxiliary accessories for their equipment.
One of these accessories is a removable staircase allowing access to the pit of a gyratory crusher for maintenance. This staircase should be able to be removed in two parts, because the overhead crane allowing its installation is limited in height. In addition, it had to adapt to the bottom of the pit, which was not united due to the accumulation of rocks remaining after the stop. The vertical concrete wall could not be used to anchor the structure.
LDV Consultants was responsible for carrying out the following activities:
- Design according to European standards;
- Structure calculations;
- Development plan.
Preliminary Detail Engineering of a Ventilation System for the Nickel Concentrator
Client : Canadian Royalties Inc.
Location : EXPO Mine, Quebec (Nunavik)
Year : 2013
Canadian Royalties is a mining company that operated a nickel and copper mine in Nunavik.
Several contaminants were airborne in the concentrator due to inadequate ventilation. Canadian Royalties mandated LDV Consultants to provide technical support to its engineering team to fix the problem.
In phase 1 of the mandate, LDV Consultants carried out the following:
- Validate the technical solution proposed by a contractor and identify the critical zones;
- Prioritize the work and set a preliminary schedule;
- Analyze the impact of the changes to the ventilation on the glycol and electrical systems;
- Produce a preliminary layout.
In phase 2 of the mandate, LDV Consultants carried out the detail engineering, namely:
- Perform calculations for the fans, glycol pumps, electrical system capacity, piping supports and concrete foundations;
- Specify the equipment to be purchased;
- Design the P&ID for the ventilation and glycol systems;
- Supply the installation drawings for the fans, pumps and electrical connections;
- Provide the isometric drawings.