Dust Suppression in Quarries: Methods and Effectiveness

Why dust suppression is not an expense, but an investment in health and productivity

Dust in mining quarries is not only an environmental and regulatory issue but also a direct threat to workers' health and the lifespan of expensive extraction equipment. Over 8 years of working with mining enterprises, I have personally inspected more than 30 quarries across Ukraine — from iron ore quarries in the Kryvyi Rih region to granite quarries in the Zhytomyr region. Each has its own dust generation specifics, and template solutions do not work here. According to WHO data-air-quality-and-health), silica dust particles up to 10 µm in size penetrate deep into the lungs, damage the respiratory alveoli, and cause occupational silicosis — an irreversible disease that progresses over decades. In Ukraine, silicosis remains one of the most common occupational diseases among miners, but it is a completely solvable problem with proper dust suppression.

Regulatory standards are becoming stricter every year. EU Directive 2017/2398 sets the maximum permissible concentration (MPC) of crystalline silica at 0.05 mg/m³ — this is 5 times stricter than the old standards. For other EU regulations affecting the industry, see the article "PFAS ban in the EU". Through its association with the EU, Ukraine is gradually harmonizing its own standards. Quarries exporting products to Europe must already comply with these standards.

The economic aspect also speaks convincingly in favor of dust suppression: fewer absences due to illness, fewer fines for violating standards (from 50 to 500 thousand UAH according to the Code of Ukraine on Administrative Offenses), lower maintenance costs for machines with clogged filters, and higher visibility reduces the risk of accidents in the quarry.

Three main methods: water sprinkling, chemical binding, biopolymer coatings

Water sprinkling (40–60% effectiveness)

The simplest and most traditional method. Special nozzles spray water over hot spots of extraction — suppression during blasting, loading, and rock dumping. Water knocks down the dust and temporarily secures it.

How it works: Dust particles have a hydrophobic surface — water naturally does not wet them. Water simply stops their chaotic movement in the air but does not hold them in place. Most of the dust settles on the ground by inertia, but with wind or spraying, it becomes airborne again.

Advantages: extremely cheap, requires no complex reagents, easily implemented using pipes and nozzles, leaves no chemical residues on the product.

Disadvantages: effectiveness is only 40–60%, water evaporates quickly in a dry climate, requires a constant supply (100–500 m³/day depending on the quarry size), water freezes in pipelines during the cold season, not suitable for extraction in arid regions.

Water sprinkling is used as a primary measure in small quarries with a limited budget, but it rarely yields a satisfactory result under strict regulatory standards.

Chemical binding (80–90% effectiveness)

Adding special reagents to water — surface-active agents (surfactants) or soluble polymers. They molecularly change the properties of water, making it capable of "capturing" hydrophobic dust and holding it in place.

For more details on surfactants and their types, see the industrial chemistry glossary.

How it works: Surfactants or polymers have two parts to their molecule — one is attracted to water, the other is attracted to dust. They position themselves between the water and the dust particles, forming strong microscopic bridges. The dust becomes hydrophilic, meaning it "presses" against the water, adheres to the surface, and does not fly into the air.

Advantages: 80–90% effectiveness, significantly lower water consumption (20–50% of water sprinkling), the reagent remains active for 1–3 days, can be applied by spraying or manual watering, adapts to seasonal changes.

Disadvantages: more expensive than water (the reagent costs 5–15 UAH/l depending on quality), requires correct concentration calculation (2–5% solution), forms a viscous film if applied in excess, effectiveness drops if there is a deficit.

Chemical binding is the gold standard for industrial quarries with normal extraction intensity. At one of the quarries in the Poltava region, we reduced dust levels by 87% in the first month of using SVK-Water — while water consumption was halved compared to the previous method of pure sprinkling.

Biopolymer coatings (3–7 days of stability)

The most modern method. Soluble biopolymers (modified starches, cellulose, gum derivatives) are applied to the surface of the rocks and, upon drying, form a flexible film that binds the dust in place for 3–7 days.

How it works: Biopolymers act like glue — they penetrate the top layer of the placer or rocks by 5–10 mm, intertwine with dust particles, and hold them. Unlike surfactants, the film remains active for months, does not require constant sprinkling, and saves water by 90%.

Advantages: highest durability of 3–7 days, minimal water consumption, environmentally friendly (biodegrades in 30–60 days), does not require daily repetition, ideal for extraction in arid regions, can be applied by helicopter for hard-to-reach areas.

Disadvantages: the most expensive (30–100 UAH/l), requires 24–48 hours to dry before work, applied less frequently than necessary (has a duration of action), requires special equipment for spraying.

Biopolymer coatings are used in the most critical areas of large quarries or during environmental audits.

Key metric: reagent consumption per ton of rock

The art of economical dust suppression is the ability to calculate the optimal reagent consumption per ton of extracted rock.

Optimal solution: 85%+ effectiveness with a consumption of 0.1–0.3 kg of reagent per ton of rock.

Calculation example: a quarry extracts 1000 tons per day. With a consumption of 0.2 kg/t, the daily reagent consumption is 200 kg or 0.2 tons. Per month (22 working days) — 4.4 tons. At a price of 50 UAH/kg — 220 thousand UAH per month.

But we calculate the TCO:

• Without dust suppression: 5 days of downtime due to visibility, a fine of 100 thousand UAH/month, 30% higher filter consumption = 150 thousand UAH

Real cost without dust suppression = 150 + 100 = 250 thousand UAH/month.

Real cost with dust suppression = 220 + 20 (water) = 240 thousand UAH.

Dust suppression turns out to be cheaper than its absence!

Application in critical areas

Loading roads (40–50% of dust generation)

Quarry roads where dump trucks with hot rock travel are the main source of dust. Here, chemical binding and biopolymers offer the highest effectiveness. With ideal implementation, roads near coal dumps require treatment once every 3–5 days.

Crushing zones

Crushing sites generate 30–40% of extraction dust. A combined approach is required here: primary sprinkling over the crusher + perimeter binding of the output material with chemical reagents.

Dumps and stockpiling

Freshly unloaded hot rock is the most critical period. The first 4 hours in windy conditions cause strong dust generation. Applying a biopolymer coating at the moment of dumping ensures an immediate halt to dust emissions.

Loading points

Dumpers or shovels also generate intense dust when loading into semi-trailer trucks. Continuous water sprinkling or special hoods with air suction and filtration are used here.

Seasonal specifics

For environmental requirements for chemical reagents for export, see "Requirements for household chemicals for export to the EU".

Spring-summer (dry season): water evaporates quickly, and the effectiveness of water sprinkling drops to 20–30%. A transition to chemical binding or biopolymers is necessary.

Autumn-winter (wet season): water accumulates, and clay becomes sticky. Chemical binding with modified polymers that withstand the movement of the wet mass works better here.

FAQ

Which dust suppression method is the most effective?

Chemical binding (surfactants + water) provides 80-90% effectiveness and is the gold standard for industrial quarries. Biopolymer coatings have the highest durability (3-7 days) but are more expensive. Water sprinkling (40-60% effectiveness) is suitable only as a baseline measure.

How much does dust suppression in a quarry cost?

With a consumption of 0.2 kg of reagent per ton of rock and an extraction rate of 1,000 t/day, monthly costs are ~220 thousand UAH. However, without dust suppression, costs for fines, downtime, and equipment maintenance reach 250 thousand UAH/month. Dust suppression pays for itself from the first month.

How does chemical dust binding work?

Surfactants or polymers have a two-part molecule: one part interacts with water, the other with dust particles. They form microscopic bridges between water and hydrophobic dust, making it hydrophilic. The dust is "pressed" to the surface and does not rise into the air. The effect lasts for 1-3 days.

What dust suppression should be used in winter?

In winter, water sprinkling is ineffective due to freezing. The optimal solution is chemical binding with modified polymers resistant to sub-zero temperatures. Biopolymer coatings also work but require 24-48 hours to dry.

SVK dust suppression reagents: 20+ years in mining

SVK has been manufacturing specialized reagents for dust suppression in quarries for over 20 years. The SVK-Dust line includes:

• SVK-Water: chemical binding, surfactants based on synthetic detergents, 85–90% effectiveness, consumption 0.15–0.25 kg/t, price 8–12 UAH/l.

• SVK-Bio: biopolymer coating, modified cellulose, duration 5–7 days, consumption 0.1–0.2 kg/t, price 40–60 UAH/l.

• SVK-Road: specifically for quarry roads, a complex formulation with corrosion inhibitors, prevents collapse during rains.

Production volumes — 800+ tons per year. Client references: Russian mines, European iron ore quarries, Ukrainian coal and phosphorites.

The SVK Test Drive program allows you to test the reagent at your quarry for free for a period of 2–4 weeks. You receive a calculated batch of reagent and technical support on the optimal concentration and consumption rate for your conditions.

Fill out the form on svk.ua or contact our mining engineer — we will select a solution tailored to your extraction type, climate, and the regulatory requirements of your region.

---

Read also:

• How to choose coolant for a CNC machine: a complete guide
• Corrosion inhibitors for oil and gas pipelines
• Industrial chemistry glossary: 30 terms