Conventional sampling systems
- hammer-type sampler
- bucket-type sampler
- stake box (rod box)
When using a hammer-type sampler, the entire cross section of the material shipped on the conveyor belt will be sampled, although this system works only discontinuously and monitors the mass flow merely by taking random samples. apc analytics offers hammer-type samplers for various conveyor belt dimensions and sample sizes to fans of classic sampling techniques.
In order to sample large mass flows continuously, the installation of a stake box (rod box) is suggested. Here, the samples will drop at a transfer point onto the stake (or rod) box which only takes off a part stream of the material conveyed (or a partial fraction of it). The stake or rod box can be designed flexibly, so as to be able to clear up blockages or to stop the sampling process (e.g. during the overburden production in open-cast lignite mines).
apc analytics manufactures two different sizes of hammer mills, which have successfully stood their test under the rough conditions in open-cast lignite mines and in power plants 24 hours a day and 7 days a week.
The „large“ mill HAMILL 4000 has been designed for a mass flow of approx. 4 t/h and mills the material into grain sizes of less than 10 mm, while the „small“ mill HAMILL 250 has been designed for a mass flow of 250 kg/h and comminutes the material into grains sizes of less than 2 mm.
These two hammer mills can also be combined with a screw sampler in between to form a sample preparation module where the samples can be separated. This combination KOLA is the perfect sample processing module for a SOLAS system located downstream, when such an additional sampling system is installed upstream of SOLAS.
apc analytics also manufactures turbo mills, which have successfully stood their test under the rough conditions in open-cast lignite mines and in power plants 24 hours a day and 7 days a week. Equipped with the relevant accessories, they are ideal for high-speed milling in laboratories.
The turbo mill Airmill 6000 with its special milling technique will comminute the material in the air stream to powder, i.e. to an average grain size of approx. 50 µm (median value) in the case of lignite, depending on the field of application and the design.
It is possible to install a sampling system to a combination KOLA for establishing mean sample values in a shift.
These samples are collected under the HAMILL 250 and have a grain size of less than 2 mm. These samples are automatically filled in a stainless steel or plastic bin and may either have to be retained or can be made available for further laboratory tests.
Automatic Laboratory Sample Feeder
Laboratory samples can be stored and fed into the pneumatically operated sample transport system SOLAS with the automatic sample feeder „ADOP“. If SOLAS is installed as online process analyser, the user can select, whether the laboratory samples are given priority during the sampling process. If not, SOLAS will continue accepting samples from the sampling process and process, fully automatically, the laboratory samples waiting for being analysed, while the conveying process has come to a halt.
The laboratory sample feeder is equipped with an RFID reader, so that the samples cannot get mixed up. The amount of sample bins to be analysed can be defined according to the customer’s specifications.
apc analytics offers the right type of conveying equipment (belt conveyor, screw conveyor, troughed chain conveyor etc.) for the transportation of materials, with the relevant equipment being individually selected and agreed jointly with well-known manufacturers on the basis of the requirements of the online analysis. Depending on the conveyor type, further additional analysers of other well-known suppliers (e.g. for micro-wave moisture measurements) may also be integrated in such systems.
apc analytics is also in a position to plan and deliver the entire steel construction that may be necessary.