Pre-calciner Technology

The introduction of pre-calciner technology increases clinker production and ensures that the rotary kiln keeps a manageable dimension.

Pre-calcination rates in excess of 90% are achieved with approximately 60% of the total fuel directed to the pre-calciner. As combustion and pre-calcination of raw material take place outside of the rotary kiln, the heat loading of the kiln is reduced and smaller rotary kilns are possible.

All IKN calciners are based on a modular system. Systems can be designed according to the fuel used or other specific requirements.

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Water Injection System

The water injection system is used to avoid critical cooler exhaust air temperatures, which can damage peripheral equipment. The amount of cooling water is calculated based on expected kiln upset conditions and the accepted maximum air temperature.

IKN Czech s.r.o. Strojárenstvo, stroje, priemysel

Heat Shield

Heat shields are designed to stabilise secondary and tertiary air temperatures at a higher value. IKN installed heat shields in more than 60 clinker coolers. The heat shield is located at the end of the recuperation zone to reduce radiation losses. The main features of the IKN Heat Shield are: •Maintaining a constant kiln hood pressure for stable flame and kiln operation. •Separation of preheated air and vent air. •Higher heat recuperation through a reduction of radiation losses.

IKN Czech s.r.o. Strojárenstvo, stroje, priemysel

Roller Crusher

IKN Roller Crushers are operating in coolers with a capacity of up to 13,000 t/d. They offer low power consumption and low mechanical wear compared to other types of crushers. The crusher can be installed at the cooler discharge or as a mid-cooler crusher for intermediate crushing. The rollers will automatically reverse at high torque levels, protecting the crushing rings against damage caused by foreign matter. Typically, 95% of the crushed clinker is reduced to a particle size of less than 35 mm. The width of the crushing slots can be adjusted to the required particle size. IKN Roller Crushers can be used for other materials than clinker. In 2004, IKN installed a 4 roll crusher for petcoke crushing at Lebec, USA. The main features of the IKN Roller Crusher are: •Large pieces of clinker cannot jam the crusher. •Reduced wear and dust generation due to low roller speeds . •Electrical drive with low power consumption. •Uniform size distribution of the crushed clinker. •The crusher is mounted on rails for easy maintenance. •Hard-faced crushing ring teeth for long service life and easy re-facing.

IKN Czech s.r.o. Strojárenstvo, stroje, priemysel

Hydraulic Drive

A reliable hydraulic drive is essential for optimum operation of the cooler and the entire kiln line. Each unit is assembled and tested in IKN’s own workshop prior to shipment. The hydraulic system is programmed with an asymmetrical travel profile, slow forward motion and fast retraction. This type of operation improves transport efficiency and balances the discharge into the clinker conveyor. Hydraulic cylinders are located outside the cooler housing, protected from contamination by clinker dust and with improved accessibility for maintenance.

IKN Czech s.r.o. Strojárenstvo, stroje, priemysel

NOx Reduction

NOx reduction potential in the calciner is strongly influenced by the fuels used. Staged combustion is an additional measure for NOx reduction. Tertiary air is directed to the upstream part of the calcining channel below the swirl head, allowing staged combustion to take place. The maximum efficiency is achieved when an area with under stoichiometric combustion conditions is created in the lower calciner part.

IKN Czech s.r.o. Strojárenstvo, stroje, priemysel

Lis Excentrický LE 400 C včetně periferie

Výrobce: VSS Rok výroby: 1995 Tlaková síla: 400 t Rozměry stolu: 1250 x 895 mm Rozměry beranu: 950 x 560 mm Zdvih: 30 - 160 mm Sevření: 630 mm Počet zdvihů: 30 - 160 /min Rozměry d x š x v: 2900 x 1550 x 3610 mm Hmotnost stroje: 21000 kg Příslušenství: Odvíječka TOMA QOPJ 250 (šířka svitku 20-120 mm, tlouška plechu 0,6 - 2,5 mm, max.váha svitku: 1400 kg), Rovnačka TOMA Lis je ve velmi dobrém stavu. Možno vidět v provozu.

Strojárenstvo, stroje, priemysel

Vodorovná vyvrtávačka BFP 130 CNC

Výrobce: UNION Rok výroby: 1993 GO: 2008 Pracovni průměr vřetene: 130 mm Otáčky hlavního vřetene: 10 - 1200 rpm Pojezd osy X: 11500 mm Pojezd osy Y: 2500 mm Pojezd osy Z: 420 mm Vysunutí pracovního vřetena (W): 800 mm Výkon hlavního elektromotoru: 42 kW Celkový příkon: 90 kVA Řídící systém Heidenhain iTNC 530. Stroj byl v roce 2008 generálkovaný Unionem. V roce 2013 provedena částečná oprava: na saních „Z“ a „X“ - přebroušení vodících ploch, výměna ztrátového mazání, výměna stírátek vodících ploch, přeložiskování převodovky pastorku. Otočný stůl a deskové pole nejsou součástí dodávky. Video na : https://www.youtube.com/watch?v=0qgqeS99ssE

Strojárenstvo, stroje, priemysel

Lis Excentrický LE 160 C

Výrobce: VSS Rok výroby: 1978 Tlaková síla: 160 t Rozměry stolu: 995 x 700 mm Rozměry beranu: 750 x 380 mm Sevření: 450 mm Přestavení beranu: 100 mm Zdvih: 20 - 120 mm Rozměry d x š x v: 2310 x 1270 x 2585 mm Hmotnost stroje: 10150 kg Modernizovaná elektro skříň, nutná výměna ložisek na hlavní hřídeli. Případně vhodné i pro GO. Cena: 5000 EUR bez DPH

Strojárenstvo, stroje, priemysel