Acidification Rotary Kiln for Acid Roasting

Description

Engineered specifically for corrosive and high-temperature working conditions, our acidification rotary kiln ensures stable operation, precise thermal control, and long service life. With more than 20 years of rotary kiln engineering experience, we provide customized EPC-level solutions for global mining companies, chemical processors, and EPC contractors.

As a professional rotary kiln manufacturer, we focus on reliable industrial kiln systems that support efficient material pre-treatment and consistent acid roasting performance.

Working Principle

The acidification rotary kiln operates as a continuous thermal treatment and acid roasting system. Raw materials are fed into the rotating cylindrical kiln and move forward gradually due to kiln rotation and inclination.

Inside the rotary kiln calciner:

Materials are evenly mixed and heated through slow rotation
Controlled high temperature initiates acidizing and oxidation reactions
Reaction intensity is adjusted by temperature, residence time, and atmosphere

Advanced kiln head and kiln tail sealing systems effectively prevent cold air ingress and flue gas leakage, which is critical for acid roasting stability. Optimized air duct and heat utilization design improves thermal efficiency and ensures precise temperature control throughout the industrial kiln system.

Key Applications & Suitable Materials

Typical applications include:

Acid roasting of metal ores and concentrates
Sulfate formation in metallurgical refining
Acidizing pre-treatment before hydrometallurgical leaching
Thermal treatment of chemical intermediates

Suitable materials:

Copper-bearing ores and concentrates
Zinc-containing materials
Nickel, cobalt, and polymetallic concentrates
Chemical materials requiring acidification

This acidizing kiln is particularly suitable for high-acidity, corrosive, or sticky materials.

Advantages

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Longer service life

When designing the acidification rotary kiln, the deflection support at the cylinder corner is taken into consideration to increase the lifespan of refractory bricks and pouring materials.

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Auto-aligning bearings

The acidizing kiln uses auto-aligning bearings and large carrier bearings with small aspect ratios to improve reliability.

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Good sealing effect

The acidizing kiln adopts a new open gear cover sealing form with an excellent sealing effect.

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Stable & reliable operation

We improve the design of the lithium carbonate acidizing kiln by using a spring sheet stacked flexible seal and a double spring sheet seal with added heat insulation.

Parameters

Model	Feed Quantity(t/h)	Revolving Speed(rpm)	Qty Of Support	Reducer Model	Motor Model	Model Power(kW)
φ0.8×10m	0.2～0.5	0.26～2.6	2	BWD4-43	YVFE3-132S-4	5.5
φ1.5×15m	3～4	0.26～2.6	2	ZSY315-71	YVFE3-180L-4	22
φ2.5×25m	6～8	0.26～2.6	2	ZSY400-40	YVFE3-315S-6	75
φ2.5×25m	6～8	0.26～2.6	2	ZSY160-25	YE3-132M-4	7.5
φ2.6×25m	6～8	0.26～2.6	2	ZSY400-40	YVFE3-315S-6	75
φ2.6×25m	6～8	0.26～2.6	2	ZSY160-25	YE3-132M-4	7.5
φ2.8×42m	8～10	0.26～2.6	2	ZSY450-40	YVFE3-315L1-6	110
φ2.8×42m	8～10	0.26～2.6	2	ZSY160-25	YE3-160M-4	11
φ3×30m	11～12	0.26～2.6	2	ZSY450-40	YVFE3-315L1-6	110
φ3×30m	11～12	0.26～2.6	2	ZSY160-25	YE3-160M-4	11
φ3.2×40m	14～16	0.26～2.6	2	ZSY450-35.5	YVFE3-315L2-6	132
φ3.2×40m	14～16	0.26～2.6	2	ZSY160-25	YE3-160M-4	11
φ3.5×35m	16～18	0.26～2.6	2	ZSY450-35.5	YVFE3-315L2-6	160
φ3.5×35m	16～18	0.26～2.6	2	ZSY180-25	YE3-180M-4	18.5
φ3.5×38m	16～18	0.26～2.6	2	ZSY450-35.5	YVFE3-315L2-6	160
φ3.5×38m	16～18	0.26～2.6	2	ZSY180-25	YE3-180M-4	18.5
φ3.5×50m	16～18	0.26～2.6	2	ZSY500-35.5	YVFE3-355L1-6	220
φ3.5×50m	16～18	0.26～2.6	2	ZSY180-25	YE3-180M-4	18.5
φ4×50m	18～23	0.26～2.6	2	ZSY560-35.5	YVFE3-3552-6	315
φ4×50m	18～23	0.26～2.6	2	ZSY224-28	YE3-200L-4	30
φ4×60m	18～23	0.26～2.6	2	ZSY560-35.5	YVFE3-3552-6	315
φ4×60m	18～23	0.26～2.6	2	ZSY224-28	YE3-200L-4	30
φ4.3×58m	23～28	0.26～2.6	2	ZSY630-40	YVFE3-4001-6	400
φ4.3×58m	23～28	0.26～2.6	2	ZSY224-28	YE3-200L-4	30
φ4.5×60m	25～30	0.26～2.6	2	ZSY710-40	YVFE3-4002-6	450
φ4.5×60m	25～30	0.26～2.6	2	ZSY280-28	YE3-225M-4	45
φ4.6×60m	27～33	0.26～2.6	2	ZSY710-40	YVFE3-4002-6	450
φ4.6×60m	27～33	0.26～2.6	2	ZSY280-28	YE3-225M-4	45
φ5.0×50m	33～35	0.26～2.6	2	ZSY710-40	YVFE3-4002-6	450
φ5.0×50m	33～35	0.26～2.6	2	ZSY280-28	YE3-225M-4	45
φ5.4×56m	40～45	0.26～2.6	2	MH3S230HB40	YVFE3-4501-6	560
φ5.4×56m	40～45	0.26～2.6	2	ZSY280-28	YE3-225M-4	45

FAQ

What makes an acidification rotary kiln different from a standard rotary kiln calciner?

An acidification rotary kiln is specifically engineered for acid roasting processes under corrosive conditions. Compared with a standard rotary kiln calciner, it features corrosion-resistant refractory linings, enhanced sealing structures, and optimized material flow design. These improvements ensure stable operation, reduced maintenance, and longer service life in acidic and high-temperature environments.

Can the acidizing kiln handle corrosive gases and acidic atmospheres?

Yes. The acidizing kiln is designed to operate reliably in corrosive gas environments. It adopts acid-resistant refractory materials, reinforced kiln shell protection, and advanced kiln head and tail sealing systems to prevent gas leakage and air infiltration. This design ensures safe, continuous operation under long-term acidic conditions.

Is customization available for different materials and processes?

Yes. As an experienced rotary kiln manufacturer, we design and deliver fully customized acidification rotary kiln solutions. We tailor kiln dimensions, lining materials, sealing systems, heating methods, and operating parameters to match specific raw material characteristics, acid concentration, and process requirements.

How does the kiln ensure stable acid roasting quality?

We ensure stable acid roasting quality by precisely controlling the temperature profile, residence time, kiln rotation speed, and internal atmosphere. Continuous rotary motion promotes uniform heat transfer and consistent contact between materials and acidic components throughout the kiln.