The Fuel Injector can be quickly and easily 

fitted to the calcining zone of a cement kiln. 

Waste-derived fuels, such as whole scrap tires 

are placed on the apparatus which rotates 

with the kiln. As the Fuel Injector reaches the 

vertical position, a mechanism allows the

Since 1975, Cadence has been 

a leading provider of combustion 

technology and alternate fuels to 

the worldwide cement industry.

CORPORATE OFFICE

One Cadence Park Plaza

Michigan City, IN 46360

Phone: (219) 879-0371

Fax: (219) 879-0390

Web: cadencerecycling.com

PERSONAL CONTACT

Ken Derksen

email: kderksen@cadencerecycling.com

S U S P E N S I O N B U R N E R

take full advantage of their kilns alternative fuel potential.

The Suspension Burner allows PH/PC kiln operators to 

A PH/PC TECHNOLOGY THAT CAN ACHIEVE

UP TO 40% FUEL SUBSTITUTION RATES 3 F U E L I N J E C T O R 4

4

A SIGNIFICANT ENERGY SAVING AND EMISSION REDUCTION 

TECHNOLOGY FOR LONG CEMENT KILNS

At work on kilns around the world since 1986, the Mid-Kiln Fuel Injector 

is the fastest and most cost-effective way of using solid energy-bearing 

waste, such as whole scrap tires, as fuel in long cement kilns.

TOP VIEW

SIDE VIEW

Mixing Air OFF

PERFORMANCE AVERAGES

ALTERNATE FUELS USED

Whole Tires

Mixing Air ON

Mixing Technology

Fuel Injector

whole tires (or other fuels) to drop into the 

center of the kiln. Virtually any energy-bearing 

waste can be used. The Cadence Fuel Injector is 

a fast, cost-effective, and proven way to add a 

variety of waste fuels to a cement kiln. 

Whole scrap tires are 

injected at a computer 

controlled rate through an 

air lock to the suspension 

burner where they are 

used as fuel.

Optional Feed Shelf for 

additional alternate fuel entry 

such as whole scrap tires.

A Mixing Air Injector 

effectively mixes the gasses 

in the calciner for more 

complete combustion.

Optional Mixing Air 

Injector adds opposing 

streams of high-velocity air 

inside kiln to improve 

combustion by mixing 

stratified gasses.

The Suspension Burner from Cadence is 

breakthrough technology for PH/PC kilns 

that maximizes a kiln’s waste fuel potential. 

Now thermal energy in the calciner can be 

reenergized using suspended scrap tires. The 

result: 

• LOWER ENERGY COSTS

 • REDUCED EMISSIONS

 • BETTER OPERATING KILN 

TAKE FULL CONTROL OF YOUR KILNS ALTERNATIVE FUEL POTENTIAL

UP TO

SOLID FUEL SUBSTITUTION RATE

40%

P R O D U C T I V E

SOLUTIONS
1

MORE alternate fuels ... LESS emissions with Cadence technologies.

F

Use more alternate fuels and produce less emissions with Cadence technology.

CADENCE APPLICATIONS

Cement kilns are the most efficient 

and cost-effective way to recycle 

whole scrap tires as energy.

or more than 30 years, Cadence has been a technology leader in the 

cement industry. Our patented Fuel Injector and Mixing Technologies 

can be found hard at work on cement kilns throughout the world. As 

energy costs increase and emission requirements tighten, our worldwide network of licensees expands because cement kiln operators 

know Cadence technologies have proven to be a fast, cost-effective 

way to meet business and environmental goals. Our innovative technology allows preheater / precalciner and long kiln operators to 

increase alternative fuel replacement rates while significantly reducing 

NOx, SOx, and CO emissions. Cadence ... technology solutions.

M I X I N G A I R

Stationary anhydrous or aqueous ammonia 

injector nozzle in the manifold slot

To ammonia supply

productive SOLUTIONS Mixing Air breaks up stratification, improves combustion 

STRATIFIED KILN GASSES CONTRIBUTE TO 

EMISSIONS IN LONG AND PH/PC KILNS

and permits more alternate fuel use.

S N C R

2

Higher temperature oxygen-rich gasses tend to 

travel along the top of the kiln while cooler, 

carbon dioxide-rich gasses tend to travel along 

the bottom. This gas stratification inhibits combustion and contributes to emissions.

When Mixing Air is added, opposing streams of 

high velocity air cause the stratified kiln gas 

layers to rotate and mix. This rotation improves 

combustion, reduces emissions, allows more 

alternate fuel use and improves kiln stability.

• Increased alternate fuels

• Less sulfur buildup

• Improved thermal efficiency

• Better product quality

SERIOUS NOx REDUCTION FOR LONG KILNS

AND PH/PC KILNS

Long kilns have not been able to take full advantage 

of SNCR’s NOx reducing capability ... until now. 

For optimum SNCR performance, two criteria 

must be met. One: The reducing agent must 

interact at a precise temperature and location. 

Two: The reducing agent must be thoroughly 

mixed with the kiln gasses. 

Cadence’s SNCR system meets these criteria 

perfectly. Mix Air injectors are positioned in the 

exact thermal region and the powerful, swirling, 

vortex of high pressure air ensures complete 

dispersion of the reducing agent. 

No other SNCR technology is as cost-effective or 

efficient at lowering NOx emissions in cement 

kilns. Reduction rates of up to 50% can be 

achieved in long wet and dry cement kilns, lime 

kilns and other mineral processing kilns.

0 1 2 3 4 5 6

NOx

SOx

CO

Mixing Air OFF

EMISSION PERFORMANCE AVERAGES

PPM (in 100’s)

Mixing Air ON

4

Anhydrous NH3

Mixing Technology

Aqueous NH3

LONG KILN

Less Emissions

More Alternate Fuel PH/PC KILN

DENMARK

UNITED KINGDOM

LITHUANIA

CANADA