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HAZEMAG

HAZEMAG

PROCESSINGEQUIPMENT

F O R T H E C E M E N T, L I M E

A N D G Y P S U M I N D U S T R I E S



Limestone crushing plant equipped with

HAZEMAG impact crusher AP-PMH 2022

2



PRIMARY IMPACT

CRUSHERSA P - P A N D A P - P M S E R I E S

The single rotor AP-P Series impact crushers are ideally

suited to crush medium-hard compact rock and can furnish

a product size of 0 –150 mm (6”) or 90% minus 80 mm

(3”) when equipped with an additional grinding path

(AP-PM Series) limiting the upper product size to ideal

Vertical Roller Mill or Roller Press feed.

HAZEMAG can supply the appropriate machine, or

appropriate complete plant, whatever the primary crushing

application may be: stationary, semi-mobile, mobile.

HAZEMAG impact crushers can handle individual lumps

of feed material up to 8 tons in weight and 3 m3 (100 cu.ft)

in volume, effecting the comminution process in a single

pass at capacities of over 2200 tons/hour. Even feed

material with a high moisture content up to 15% H2O can

be processed without any problems by the provision of

indirect heating of feed plates and impact aprons through

installation of a circulating thermal oil heating system.

HAZEMAG impact crushers are insensitive to unbreakableinclusions in the feed material thanks to pendulum-mounted

impact aprons. They can be retractable, mechanically

mounted or controlled by hydraulic cylinder for manual or

automatic adjustment of gap settings

to determine

product size.

Fig. 1

Impact crusher

AP-PMH 2022 with

blow bar changing device

Fig. 2

Blow bar changing device

Fig. 3

Grinding path

3

Fig. 2

Fig. 1

Fig. 3



Semi-mobile crushing plant in Oman.

HAZEMAG Double-Rotor Compound Crusher

Type AP-CM 2022, Capacity: 800 t/h

4



The unique HAZtronic® electro-hydraulic control system

for impact aprons and grinding path allows automatic

gap adjustment, product size control, compensation of

blow bar wear and protection against tramp metal. On

the entry of tramp metal into the impactor, the first impact

apron retracts immediately on contact, at the same time

initiating the retraction of the second apron and the grind-

ing path (if fitted), allowing the tramp metal to pass through

the impactor and minimizing possible damage.

As soon as the problem has been resolved, the impact

aprons return automatically to their original settings, thus

reducing to a minimum the percentage of unwanted over-

size in the product. If the impactor is additionally fitted

with a variable-speed drive, all the main parameters can

be varied to influence the product granulometry by

HAZtronic® control.

PRIMARY IMPACT

CRUSHERS

Fig. 1

HAZEMAG impactor

AP-PMH 2022

equipped with HAZtronic®

Fig. 2

Hydraulically adjustable

grinding path

Range of product size

distribution generated

with single-rotor Impact

Crusher AP-P and

AP-PM Series

5

Fig. 1

Fig. 2

Particle size d (mm)

R et ai n e d ( % )

P a s s i n g ( % )

99

95

50

2

5

1

20

98

90

80

50

30

20

10

12

0,02

0,1 1 1 0 100

99,98

1000

90

70

80



Limestone crushing plant in Colombia

equipped with 2-rotor HAZEMAG Compound Crusher

AP-CM 1622, Capacity: 500 t/h

6



GSK-Type Rotor

The blow bars are mechanically clamped in the rotor and held in position by wedge-type spacers which can be

removed to the side as required. The design is such that it permits blow bar changing in both the radial or axial

direction. The axial exchange does not require dismantling of spacer wedges and is performed by means of a

clamping device. The blow bars have a utilization rate of approx. 45%.

GKH-Type Rotor

The blow bars are clamped in the rotor blow bar holders by hydraulically-actuated wedges. Thanks to its rugged

design and firmly-clamped blow bars, this rotor can cope with the most arduous operating conditions. Blow barturning/changing is effected in the radial direction and is facilitated by the use of a special blow bar changing

device installed at the front hinged crusher housing section. The blow bars have a utilization rate of approx. 50%.

8



Primary crushing calls for heavy rotors with rugged, torsion-

free rotor bodies providing a very high moment of inertia.

Thus the latest HAZEMAG rotors are designed as cast

steel rotors consisting of high quality cast steel disks joined

together by annular welds applied in a special and patented

continuous welding process. The machined rotor bodies are

secured to the rotor shaft by special clamping devices,

which simultaneously act as an emergency coupling.

Since HAZEMAG impactors not only have considerably

fewer impact tools compared with hammer crushers, butalso offer far shorter down time for exchange of these

tools, it is important to note that the latest HAZEMAG

design features have achieved significant progress in

reducing maintenance costs, especially when compared

with hammer crushers.

The rotor is the "heart” and the most severely tested part

of an impactor and plays a vital role in the comminution

process. Consequently, during the course of HAZEMAG’s

50-year existence, particular emphasis has been placed

on rotor design and development for the various fields of

application.

ROTORSF O R P R I M A R Y

I M P A C T C R U S H E R S

9

Fig. 1

Fig. 2

Fig. 3

Fig. 1

GSK-type rotor,

blow bar securing

Fig. 2+3

GKH-type rotor,

blow bar securing



Secondary Impactor AP-SMH 1112

Capacity: 200 t/h

10

Impactor AP-PH 1313



AP-S and AP-SM Series impactors are preferably used for

the crushing of medium-hard rock, and can handle – depen-

ding on the machine size and application – a material of

up to 600 mm (24”) feed size to create a product 0 – 35

mm (11/3”). Equipping with a grinding path reduces the

percentage of oversize.

AP-SH and AP-SMH Series impactors offer the advantages

of hydraulically adjustable impact aprons and grinding

paths including the option of applying the latest HAZtronic®

control. This "intelligent" crusher generation incorporates

numerous innovative features which increase operational

efficiency and cost effectiveness. The rotor is an enclosed

rugged cast steel design which is characterized by a very

high moment of inertia coupled with excellent wear-resist-

ant qualities.

The blow bars have been designed for single-face use but

with a very high degree of utilization. It has thus been

possible to reduce their overall weight, making them much

easier to handle. The blow bar retainers are self-clamping

and easy to release. AP-K and AP-KM Series impactors

are designed specifically for crushing of more abrasive

materials. Depending on the size of machine and appli-

cation, these impactors can handle feed material of up to

300 mm (12”) to furnish a product 0 – 45 mm (13

/4”).Extremely favourable wear rates and minimum mainte-

nance requirements are just two of their distinctive

features. AP-KH and AP-KMH Series impactors

offer in addition the advantages of hydrauli-

cally adjustable impact

aprons and grinding

paths including the option

of applying the latest

HAZtronic® control.

SECONDARY IMPACT

CRUSHERS

11

Impactor AP-KMH 1320

Fig. 4

Impactor AP-PH 1013

Fig. 4



Apron Feeder and Spillage Conveyor

with spillage chute in a primary crushing plant

12



HAZEMAG feed and discharge units play a vital role in

HAZEMAG plant engineering.

HAZEMAG Apron Conveyors are used mainly as hop-

per extraction and crusher feed units in primary crushing

plants. The rugged design with infinitely-variable mecha-

nical or hydraulic drive has been successfully used in

countless operations under extremely demanding conditi-

ons worldwide.

The new generation of apron conveyors make use of high

quality, lifetime lubricated tractor chains and rollers, thus

increasing availability, economizing investment and mini-

mizing maintenance.

HAZEMAG Chain Conveyors are used mainly for hopper

extraction of lighter materials and as spillage conveyors

underneath apron feeders.

HAZEMAG Push Feeders are very rugged hopper

discharge units, which can be supplied with infinitely-

variable mechanical or hydraulic drives.

HAZEMAG Roller Grates (Wobblers) are used predomi-

nantly for the pre-screening of feed materials. They can

be applied also as combined hopper discharge and pre-

screening units, representing a particularly compact and

favourably-priced solution.

PERIPHERALEQUIPMENTF O R C R U S H I N G P L A N T S

13

Fig. 1

Fig. 2

Fig. 3

Fig. 4Fig. 1

Apron Feeder

with tractor chain

Fig. 2+3

Views of Wobblers

Fig. 4

End view of a Chain

Conveyer



HAZEMAG NOVOROTOR Hammer Mill II 1300/2500

14



HAZEMAG UNIROTOR (single-rotor)

and NOVOROTOR (double-rotor)

hammer mills are used for fine grin-

ding and combined drying & grin-

ding of cement raw materials,

burnt lime, dry mortar and

other construction materials. Their application in the

cement and burnt lime industry enables the capacity of

downstream tube mills to be considerably increased.

They are characterized in particular by the versatility of

their design, which permits optimum adaptation to the

specific application. Plants are designed to include screens

or classifiers, etc. according to process demands. Wear

parts, such as grinding paths, grates and hammers are

well accessible and easy to change/replace.

In the UNIROTOR hammer mill, the direction of rotation

of the rotor is reversible, ensuring optimum utilization of the hammers without the requirement to turn them when

one face is worn.

In order to optimize the plant design - particularly in the

case of new processes - testing of customers‘ material in

HAZEMAG’s modern, comprehensively equipped test

facilities is recommended.

HAMMER

MILLS

15

HAZEMAG UNIROTOR

hammer mill



HAZEMAG Rapid Dryer ASS 1261



C R U S H E R / D R Y E R S

DRYERSR A P I D D R Y E R S

Simultaneous crushing and drying may be required

because a material is too coarse for a dryer alone.

HAZEMAG designs and builds complete Crusher/Dryer

plants for materials such as clay, limestone etc. with initial

moisture contents up to 30% H2O and capacities up to

600 tons/hour. Their application in the cement industry

enables the capacity of downstream tube mills to be con-

siderably increased.

HAZEMAG Crusher/Dryers combine the drying process

with the very effective impact crushing process. The crush-

ing operation creates the much larger material surface area

to provide the conditions for an optimum exchange of

heat between hot gases and feed material. There are two

designs of machine, single and double rotor versions.

HAZEMAG Rapid Dryers fitted with agitator shafts are

used as short-residence dryers for granular, plastic or

sludge-type materials (e.g. pozzolane, blast furnace slag,

clay, marl, gypsum, kaolin filtercake). Operating according

to the parallel flow principle, wet material and hot gases

pass through the dryer in the same direction, during which

time the agitator paddles swirl the wet material around to

attain a large material surface area, resulting in an inten-sive but at the same time thermally favourable drying

effect by the hot gases. The air sealing

system is provided by HAZEMAG

pendulum flap gates or rotary gate val-

ves. In most cases, optimum plant design

is preceded by exhaustive tests

carried out on customers‘ mate-

rial in HAZEMAG’s state of

the art test facilities.

17

Fig. 1

Fig. 2

Fig. 3

Fig. 1

HAZEMAG Rapid Dryer

Fig. 2

HAZEMAG Crusher/Dryer

APT1 Series

Fig. 3

HAZEMAG Crusher/Dryer

APT2 SeriesHAZEMAG Crusher/ Dryer



HAZEMAG Triple Pendulum Flap Gate

18



HAZEMAG gate valves are used as feed or discharge

units and as process air sealing systems.

They are characterized by a high degree of operational

safety, robustness and ease of maintenance.

HAZEMAG Pendulum Flap Gates are

supplied as double- or triple-pendulum

gates with either mechanical or hy-

draulic actuation systems for capacities

up to 550 m3/h (19,000 cu.ft/h).

HAZEMAG Rotary Gate Valves are

designed with inlet and outlet tangen-

tially offset vis à vis the rotary vane.

For particularly coarse material, a specialdesign of valve with retracting shield is recommended.

Rotary gate valves are available for capacities up to

550 m3/h (19,000 cu.ft/h).

GATE VALVES

P E N D U L U M F L A P G AT E SR O TA R Y G AT E VA LV E S

19

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 1

HAZEMAG Double Pendulum Flap Gate

Fig. 2

HAZEMAG Triple Pendulum Flap Gate

Fig. 3

HAZEMAG Rotary Gate Valve

Fig. 4

HAZEMAG Rotary Gate Valve

w/retracting shield



HAZEMAG & EPR GmbH

Brokweg 75

48249 Dülmen - Germany

Tel.: +49 (0)2594/77-0

Fax: +49 (0)2594/77-400

Internet: www.hazemag.de

HAZEMAG

&EPR GmbH