Innovative Grinding Systems for the Food Industry

The area of fine-grind­ing has a spe­cial role with­in the process chain in food pro­duc­tion, as here the prod­uct deter­mines the tech­nol­o­gy to be used as in no oth­er pro­cess­ing step. The process­es of grind­ing basi­cal­ly dif­fer depend­ing on the required final fine­ness­es and the mate­r­i­al struc­ture. Where­as when pro­cess­ing gela­tine, it is often pos­si­ble to obtain the desired fine­ness of around 600 μm (d97) using an Impact Mill, the Chlorel­la algae with final fine­ness­es of down to approx. 7.5 μm (d50) for which demand is steadi­ly increas­ing in Europe, can only be obtained using High-Den­si­ty Bed Jet Mills. On the oth­er hand, for exam­ple, when sug­ar is ground to obtain confectioner´s sug­ar, which has an aver­age final fine­ness of 100 μm (d90), in this case the par­tic­u­lar focus is on the fur­ther pro­cess­ing of the prod­uct. This means that the grind­ing sys­tems used must be par­tic­u­lar­ly reli­able so as not to delay the down­stream processes.

To meet these diverse demands the Net­zsch com­pa­ny has a broad prod­uct port­fo­lio at its dis­pos­al, which includes grind­ing sys­tems for numer­ous dif­fer­ent appli­ca­tions. On its exhi­bi­tion booth at this year´s Anu­ga, Net­zsch Trock­en­mahltech­nik GmbH from Hanau, Ger­many will exhib­it two new­ly devel­oped sys­tem solu­tions which are used in the food industry.
The CONDUX 60 Fine-Impact Mill is the small­est com­plete grind­ing plant cur­rent­ly avail­able on the mar­ket. This mobile sys­tem can fit through any stan­dard com­mer­cial­ly avail­able door and can be fit­ted with var­i­ous grind­ing tools and sta­tors to suit the appli­ca­tion. For this rea­son, the CONDUX 60 is par­tic­u­lar­ly suit­able for the flex­i­ble lab scale pro­duc­tion of mate­ri­als with a Mohs hard­ness of up to 3 — 3.5, for fea­si­bil­i­ty stud­ies or for the man­u­fac­ture of small­er prod­uct charges.
Anoth­er high­light which will be exhib­it­ed on the Net­zsch-exhi­bi­tion booth in Cologne is the CONDUX Fine-Impact Mill with new tools. This proven sys­tem is equipped with a grind­ing disc with grind­ing track as well as an inte­grat­ed dynam­ic air clas­si­fi­er. It use can be par­tic­u­lar­ly effi­cient if the desired final fine­ness can­not be guar­an­teed with con­ven­tion­al screen­less pin mills or blast mills equipped with screens. This ver­sion of the CONDUX com­bines high fine­ness­es (< 30 μm) with an exact upper par­ti­cle lim­it in an easy-clean and low-main­te­nance sys­tem. Unlike con­ven­tion­al clas­si­fi­er mills with two dri­ves, the grind­ing disc and clas­si­fi­er wheel are torque-proof con­nect­ed and dri­ven by one mutu­al dri­ve motor. In addi­tion to this, by alter­ing the height of the clas­si­fi­er wheel a vari­able adjust­ment of the sep­a­ra­tion lim­it can be car­ried out in the sim­plest way possible.
This and many oth­er solu­tions from the areas of grind­ing, mix­ing, dis­pers­ing, deaer­at­ing and clas­si­fy­ing in the food-pro­cess­ing indus­try are wait­ing to be dis­cov­ered by vis­i­tors to the Anu­ga FoodTec 2018.
Vis­it Net­zsch at Anu­ga Foodtec: Hall 10.2, Stand C080 C088