Recent projects by Maerz Ofenbau
Gangyuan Co. Doo, Smederevo/Serbia, placed an order with Maerz Ofenbau AG for the supply of engineering, license, know-how, equipment as well as technical assistance services during erection, commissioning and start-up of a Maerz PFR lime shaft kiln at the client’s Kucevo lime plant. The new kiln of the circular type R4P will process limestone with a grading of 60 to 110 mm and will produce 600 t of burnt lime per day.
Natural gas will be used as fuel, with an option to also use coal in the future. The kiln will eventually be operated with either 100 % natural gas, 100 % coal dust or a mixture of both fuels. Maerz’s equipment supply comprises the following main items:
Process air blowers with motors
Electric, measuring and control system for the lime kiln
Firing system for natural gas, including the start-up burner equipment
Hydraulic equipment
Limestone skip hoist winch, including the pertinent electrical measuring and control equipment
The client will perform the erection of the plant with local contractors and Maerz will act as technical advisor, if so requested by the client. Maerz’s specialized technicians will assist with hot commissioning and acceptance test runs on the lime kiln and the associated equipment.
Fassa S.r.l., Spresiano (TV)/Italy, and Maerz Ofenbau AG signed a contract for the supply of engineering, license, knowhow and equipment for revamping the 400 t/d natural gas/wood fired Maerz lime shaft kiln built by Maerz some 15 years ago at the client’s Ceraino (VR) plant.
Within the contractual scope of equipment and services, Maerz will supply basic and detailed engineering as well as key equipment for the following kiln components:
Limestone charging system
Natural gas firing system
Wood dust firing system
Electric, measuring and control system
After revamping, the Maerz PFR Kiln of the rectangular type E6 will produce more than 350 t of burnt lime or dolomite per day, processing limestone and dolomitic stone with grain sizes between 40 and 80 mm or similar, using natural gas and/or wood dust as fuels.
Furthermore, Fassa and Maerz signed a contract for the erection of another Maerz PFR kiln in Fassa’s Ceraino di Dolcé (VR) lime plant. The new Maerz PFR kiln of the circular type R1P with a nominal capacity of 300 t of burnt lime per day will process limestone with gradings of 30 to 60 mm and 40 to 80 mm resp., using natural gas and wood dust as fuels. Firing with 100 % natural gas, 100 % wood dust and a mixture of both fuels will be possible.
Maerz’s scope of supply for the new kiln plant includes engineering, license, knowhow, materials and equipment as well as technical assistance services. The material and equipment supply mainly comprises process air blowers with motors, firing systems for natural gas and wood dust, hydraulic system and the electric, measuring and control system.
Local contractors will carry out erection work for the plant under the supervision of the client. Commissioning and start-up of the kiln is scheduled for approx. 11 months from the effective date of the contract.
OOO Ukhta Construction Materials Plant (UCMP), Ukhta, Komi Republic/Russia – the client – and Maerz Ofenbau AG signed a contract for the construction of a Maerz Lime Kiln. The location of the new lime production site will be Ukhta in the Komi Republic. The new kiln of the Finelime type F2S will process limestone with gradings of 40 to 80 mm and 15 to 40 mm resp. to produce between 350 and 400 t of burnt lime per day. Natural gas will be used as fuel.
Maerz’s scope of material supply includes the following main items:
Key structural steel equipment
Limestone weighing system
Special refractories
Process air blowers with electric motors
Natural gas firing system
Hydraulic system
Electric, measuring and control equipment
Stone charging equipment, including skip winch and electric control system
Lime discharging equipment
UCMP will perform the erection of the plant with local contractors. Commissioning of the kiln plant and start of commercial quality lime production is scheduled for the end of 2020.
Furthermore, the contract UCMP/Maerz provides options for the construction of two more Maerz kilns at the plant site in Ukhta.
Kalcit Ltd., Slivnitsa/Bulgaria, placed an order with Maerz Ofenbau AG for the supply of engineering, license, know-how, equipment as well as technical assistance services during erection, commissioning and start-up for a Maerz PFR lime shaft kiln. The new kiln of the rectangular type E2 with a nominal capacity of 100 t of quicklime per day will process limestone with a grading of 40 to 80 mm. Natural gas will be used as fuel. All ancillary kiln equipment, such as the firing system, process air blowers, etc. will allow production rates of between 75 and 150 t of lime per day, with the quality of the lime produced meeting the contractual quality at all times. Maerz’s equipment supply comprises the following main items:
Refractory materials for the kiln lining
Process air blowers with motors
Electric, measuring and control system
Firing system for natural gas, including the start-up burner equipment
Hydraulic equipment
Limestone skip hoist winch, including the appertaining electrical measuring and control equipment
Waste gas filter
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