Peanut preparation: shelling, grading, roasting, and aflatoxin control

Why prep dominates

Why shelling and roasting decide the press outcome before tonnage

Peanut press performance is set upstream. Kernel oil 44-56% only converts to yield 40-48% when shell residue <2%, moisture 5-8%, roast 160-180°C × 20-30 min, and damaged/moldy kernels rejected. Without these, even a 500-ton press underperforms.

Feed prep00:19

Peanut shelling, cleaning, and feed condition

Use this clip to decide whether shelling, cleaning, and grading belong in the current phase.

Feed route

Separate pods, shelled kernels, and graded kernels

Different feed starting points change prep, roasting, pressing, and filtration scope.

• Shell residue <2% (otherwise barrel partitions clog, pressure drops, residual cake oil rises >10%).
• Moisture 5-8% (>10% prevents cake formation; <4% gives brittle cake and oil bypass channels).
• Roast color L* 50-60 (hot route) — too light = under-developed cell rupture, too dark = scorched flavor and PAH risk.

Module specifications

Pretreatment modules with capacity ranges

Inquiry inputs

Preparation data that closes the quote loop

• Pods or kernels? If pods, shell content (30-40%) and shelling capacity needed (kg/h).
• Kernel grade: 1000-kernel weight, broken-kernel %, moisture %, foreign matter %.
• Aflatoxin status: lab certificate per lot, UV sorter present? Storage RH <70%?
• Roasting: drum (continuous) or wok (batch)? Target temperature (160-180°C) and time (20-30 min)?
• Cake target: feed grade, food-grade peanut flour (defatting + grinding), or local resale?

Project boundary

What to confirm before scoping Peanut Shelling and Roasting | Shell <2%, Moisture 5-8%, Roast 160-180°C

Peanut Shelling and Roasting | Shell <2%, Moisture 5-8%, Roast 160-180°C should not be quoted from an equipment name alone. Check feed lots, target oil, post-press handling, and packing rhythm in one scope before deciding which Peanut Oil Press modules stay. Listed on the factory hot-press page — discuss 300/325 first.

When feed condition, moisture, impurities, batch weight, and product position are unclear, press tonnage and filter area become guesswork. Factory systems share 60 MPa and 2.2 kW motors; hot pure press is 30–40 min/barrel and cold pure press is ~2 h/barrel — cycle time matters more than brochure tonnage.

• Confirm whether feed is whole seed, kernels, pretreated material, or an existing semi-finished stream.
• Confirm whether the target is crude oil, filtered oil, bottled oil, drum ingredient oil, or a refining handoff.
• Hot cycle reference: pure press 30-40 min/barrel, ~1.5 h for 2 barrels with loading; cold pure press ~2 h/barrel, ~4.5 h for 2 barrels.
• Confirm batch rhythm, labor, changeover, retained samples, power (often 380V/50Hz/3ph), and site install conditions.

Factory model check

Match hot / cold models to factory hard data

When discussing Peanut Shelling and Roasting | Shell <2%, Moisture 5-8%, Roast 160-180°C, pin models to published factory specs — not tonnage alone.

Hot 300/325: 300–325 ton, 60 MPa system, standard barrel Ø390×800 mm / max 100 kg, pure press 30–40 min/barrel, ~1.5 h for 2 barrels with loading, 2.2 kW motor. Cold 355/400/426/480/500: 370–630 ton, integrated frame, same 100 kg standard barrel, pure press ~2 h/barrel, ~4.5 h for 2 barrels with loading; optional Ø300 high-pressure barrel max 60 kg. Residual oil target ~≤5% (peanut hot often 6–8% measured).

• Standard barrel Ø390×800 mm, max ~100 kg crushed feed; optional Ø300 high-pressure barrel max ~60 kg.
• Cylinder material 27SiMn; cold frames are integrated molded steel; hot frames are typically H-type channel steel.
• Listed on the factory hot-press page — discuss 300/325 first.

Equipment check

project scope needs to land in equipment interfaces

After Peanut Shelling and Roasting | Shell <2%, Moisture 5-8%, Roast 160-180°C is clear, write the interfaces: how preparation feeds the press, how oil leaves the press, how filtration connects to tanks, and how packing receives finished oil.