Sider Technology SRL

• Capacity from 1 to 30 tons
• Production of every kind of cast iron
• Constant features of the metal
• Production of nodular cast iron of better quality than the one prepared with any other type of melting furnace, either in elasticity or in toughness
• Better energetic efficiency than the one of any other kind of melting furnace
• Minimal dust emissions (< 0,5 kg per ton of produced cast iron)
• Negligible oxydations:
               C  <  0,10%                Si  <  0,10%                Mn  <  0,25%
• Reduced refractory wear and tear
• Facility in the lining repair and restoration
• Minimum necessity in labour, either for the process management, or for the plant maintenance
• Maximum attention to the safety rules
• No risks for operators and production, too, in case of refractory fissure: there are no water cooling circuits inside the refractory lining

• Sipron Multicat – simple or articulated – is a continuous mixer working with the automatic variation of three types of catalysts and of their meterings in function of the temperature
• Constant hardening times not depending either on the environment temperature or on the sand one
• Automatic adjustment of the additives deliveries independently on the pumps wear state
• Alarm threshold for maintenance warning
• Self-acting stop in case of shortage or lack of binder or catalyst
• Instantaneous readout and control of the pumps delivery, realized by means of electronic flowmeters
• Delivery from 3 to 50 t/h
• Ranges from 1 to 11 meters. Length of the primary arm increasable
• Motorized movement of the primary arm and of the secondary one
• Automatic cleaning of the mixing screw
• Central opening of the mixing channel in order to facilitate the interventions on the mixing screw
• Internal smokes suction circuit, with fan installed in the basement

During the Eighties Sider began to be interested in the study of the moulding process with sand/silicate and to the consequent regeneration of sand. In 1987 it realized the first plant for the reclamation of sand bonded with sodium silicate.

The continuous development of the technology in the following years has carried today Sider Technology to plan and construct systems allowing to reclaim till more than 90% of the used sand.

 The sand reclaiming process is subdivided in more steps:

The vibrating shakeout equipment crushes the sand blocks, in order to turn them to grains or to very small size. Metallic parts, stones or other foreign matters are kept by a screening surface and are discharged through a pneumatically opened shutter

Sand coming from the shakeout is conveyed upwards through suction. During such transport it undergoes, because of the speed, a crushing and a rubbing of the grains

In the decantation chambers, a first separation and elimination of dust is carried out

The dusted and treated sand is screened, leaving to pass the definitively selected one to the successive phase

Through the hot-air fluid bed, the grains are heated and dried, in order to favour the shattering of the silicate film covering them. Afterwards the rubbing of the grains pulverizes the silicate film, while dust is removed and stored in the hopper of the proper sleeves filter

The sand is cooled uniformly in a heat exchanger with finned tubes batteries before its definitive ensilage

A pneumatic propulsor, placed under the cooling-unit, conveys sand to the usage point

In order to improve the quality and to optimize the silicate consumptions, sand is treated for a last time in a final dust exhausting group provided with an adjustable cascade system. In such way also the residual fines together with dust produced during the pneumatic conveyance are captured, and you obtain a sand with eccellent granulometry features

• Delivery from 2 to 30 t/h
• Grids or shakeout machines for vibrating treatment with pneumatic discharge of the rejects
• Soundproof boxes for dust suction, built in steel or reinforced concrete with automatic sliding doors
• Gratings for pit covering, evacuating towards the shakeout machines
• Pneumatic friction treatment, conveyance and cooling
• First dust exhaustion with adjustable selection of the fines to reject
• Screening by means of net with spring for the permanent tension of this one
• Gravity heat exchangers with water circuit cooled by evaporating tower or refrigerator
• Maximum attention of the safety rules
• Plenty of access stairs and gangways in order to make control and maintenance operations easier
• Final dust exhaustion to be placed above the usage point of the sand, with possibility of making an even more careful selection of rejected fines and dust
• You will have the best sand at the lowest cost, by the most practical way