Italian company Bedeschi has successfully completed another contract, with the supply of a mobile crushing group to Shurovsky Cement OJSC (Holcim Group) in Kolomna (Moscow region) plant.
Shurovsky Cement is one of the first cement plants built in Russia (1870). In 1912, the plant became the first in Russia to receive two new Unaks rotary kilns.
A plan to modernize the Shurovsky cement plant was approved by Holcim EXCO in March 2007. A new high-tech dry cement production line will replace the old installation, and is considered to be the most modern, ecologically friendly and energy-efficient way to produce cement. Shurovsky Cement is the only plant in Russia to produce white cement.
 
Bedeschi had to take the following factors into consideration for the project:
Metereological data
  • ambient temperature – maximum +40°C
  • minimum –35°C; and
  • annual average +5°C.
 
Rainfall
  • yearly average: 1,113mm/year; and
  • maximum per day: 219mm.
Civil design
  • snow reference load 126kg/m2 SNiP 2.01.07-85*. Wind
  • normal wind load 23kg/m2 SNiP 2.01.07-85*; and
  • prevailing wind direction mainly S (E, SE, S, SW,W).
 The crushing group is made up of:
  • tracks for support and travelling;
  • steel structure frame applied on the tracks and supporting the machines and the devices;
  • CNA 11/2200 apron feeder complete with hopper;
  • RL 650/2200 double roller crusher;
  • belt conveyor to discharge on downstream conveyors; and
  • belt conveyor, inclined, mobile on idle wheels for connection with downstream belt conveyors.
 
SYSTEM SUPPLIED
CNA 11/2200 + RL crushing system apron feeder
CNA 11/2200 apron feeder
Useful width of metal apron at the discharge:   2,200mm
Interaxis of heads:                                              11m
Inclination:                                                         20°
Approximate hopper capacity:                           15m3
Hopper height at dwg:                                        4m max
Lateral guide:                                                      2
Central sliding guides of apron:                          3
  
 
Installed electric power of apron:                     22kW (with inverter) for turn down ratio 1:10
 
RL 650/2000 toothed roller crusher type
Dimensions of inlet mouth:                                1,600x2,000mm
Internal diam. of rollers:                                     650mm
External diam. of rollers:                                    800mm
Opening between rollers:                                    50mm
Installed electric power:                                      132 x 2kW
 
Three belt conveyors
The belt conveyor structure is equipped with tyred wheels that are suitable for non-paved terrain; the wheels have hydraulic pistons for their lifting in order to reduce the height from ground during the working phase and to increase stability.
The frame is suitable for counterweights (not included in the supply) to prevent the equipment overturning.
The belt conveyor can be inclined from +10° to +20° using hydraulic pistons, to fit the height of downstream belt conveyors.
All hydraulic pistons are fed by the crushing group’s hydraulic unit, rapidly connected for temporary feeding.
The mobile belt conveyor can be towed by an external truck/tractor (not included in the supply).
 
 
Latvian conundrum solved with Bedeschi’s tailor-made solutions
In June 2011 Sia Cemex, awarded Bedeschi a contract to supply a GDF 800 mixer-filter with frontal grids for the Broceni plant in Latvia.
Cemex is Latvia’s only cement producer, and the country’s leading producer of ready-mix concrete.
In summer 2007, Cemex started to build Europe’s most modern cement plant in Broceni. The total investment in this plant exceeds €275 million. At that point, Bedeschi was already involved, and was contracted to supply the complete limestone and clay receiving, crushing and storage facilities, as well as all plant apron feeders for gypsum, clay, limestone etc.
In summer of 2010 the construction of the new cement plant was completed and it was commissioned. The new cement plant can produce 1.6mt (million tonnes) of cement per year, which is exported to the Baltic States, Finland, Belarus and Russia.
The clay in the Broceni region is the most difficult and sticky in the Baltic area, due to its high moisture content and high plasticity. Therefore, after many laboratory and industrial tests with the clay, carried out in co-operation with Cemex engineers, Bedeschi was recently asked to supply its GDF 800 mixer-filter with frontal grids. This is used to handle, mix and regularly feed the clay in front of the plant drier.
 
FILTER FEATURES
Final auger diameter: 800mm
Grid surface: 9,800cm2
Main motor installed power: 160kW, 1,450rpm
Hydraulic power pack installed power: 4kW
  • machine in strong steel structure.
  • gears made of steel NiCrMo alloy, milled from full material. Pinions hardened of 18 NiCrMo5 steel;
  • driving pulley complete with pneumatic clutch;
  • mixing paddles and augers made of steel, easily replaceable: auger final elements with anti-wear chromium plating;
  • grids with large surface, free from mechanic parts, with holes or slots;
  • excellent mixing homogenizing because of clay paddling against the grids;
  • change of grids in a rapid and simple way using a piston hydraulic system complete with hydraulic power pack;
  • machine complete with pipes predisposed for wetting system:
    • pipes and necessary connections on the hopper
    • manual valve for water dispenser
    • electric valve ON /OFF for interlock with the clutch
  • machine complete with automatic lubrication unit for main gearbox.
In December 2011 the mixer was commissioned with great success and to the complete satisfaction of Cemex. This contract is a further
indication of Bedeschi’s expertise in handling difficult materials with its tailor-made solutions.