WhereAraraquara, São Paulo State, Brazil
Since2001
FamilyIndustry and continuous roasting
History
Marcos and Marcelo found Siatec Brasil in 2001, in Araraquara, in the State of São Paulo. They do not come from coffee but from machine automation. It is this trade that they bring to roasting, and that explains the shape of the catalog: automated stations rather than a stand-alone roaster. Their first known product is not a roaster, moreover. It is the MRE-60, a reprocessing machine, that is, for recovery. It opens damaged packs of ground coffee, separates the powder from its packaging and returns it to production, without a hand touching it. The problem it solves is commonplace in a Brazilian factory. Punctured packs pile up, and opening them with scissors is slow, dirty and dangerous for the product. The company then widens its business by stages. In 2005 come consulting, technical assistance and the upgrading of existing machines, what the trade calls retrofit. The automated mill comes out in 2013. The company's own roaster comes only in 2014, thirteen years after the founding. The founders explain the wait by their refusal of the rotating cylinder, which they judged too wearing and too inefficient. Expansion toward the rest of Latin America begins in 2020, the rounded silos come out in 2023. The company announces in 2026 a factory of 4,000 m².
What it makes
Siatec sells not a single machine but the stations of a factory: roasters, combustion furnaces, mills, storage silos, a machine for recovering packaged coffee. The furnace, which Brazilians call fornalha, is a combustion chamber separate from the roaster. The fuel burns there at a distance, and only the hot gases reach the coffee. The flame therefore never touches the bean, which rules out the surface burn that a bare flame gives. The manufacturer describes no heat exchanger, however. It is therefore the combustion gases themselves that pass through the bed of beans, and not clean air heated behind a wall. This furnace accepts natural gas, liquefied petroleum gas, wood, wood chips, briquettes or diesel. It is built in carbon steel or stainless steel, lined with refractory brick. At the outlet it carries a stainless steel particulate collector, meant to retain soot before the chimney, and an extractor that regulates the oxygen supply to the chamber. The manufacturer sells it alone, claiming it fits the cylinder roasters on the market. The roasting chamber is described by the company as a fluid bed under negative pressure. The fluid bed designates a mass of beans held in suspension by a rising air current. Each bean is then surrounded by hot air instead of resting on hot metal. Negative pressure keeps the chamber below the pressure of the workshop, so that fumes and chaff go to the chimney and not into the room. The mill, for its part, works with a blade and a peneira, the Portuguese word for sieve, with automatic cleaning of the sieves while running.
The models
The public catalog counts seven stations, including two roaster lines. The Master line, presented as a high-performance roaster, is announced from 100 to 3,600 kg per hour, with two independent furnaces. A second sheet, titled gas roaster, gives batches of 240, 480 or 720 kg, in 12 to 15 minutes. That makes four, eight or twelve 60 kg sacks. The site nowhere writes that these two sheets describe the same machine, but the capacities agree. The Black Gold line, intended for specialty coffee, roasts 30, 60 or 120 kg per batch in 12 to 18 minutes, with a single furnace. The page listing the products gives it up to 480 kg per hour. It cools by suction, by means of a large-diameter sieve tray and an extractor placed beneath, which draws cold air through the bed of beans. Both lines are controlled by touchscreen and are made of stainless steel. The Black Gold receives an epoxy paint, the gas line a polyurethane paint. Both burn natural gas or liquefied petroleum gas. The manufacturer announces compatibility with the curve software Artisan and Cropster. The MMS mill exists in three power ratings: 15 hp for 350 kg per hour, 25 hp for 900 kg, 40 hp for 1,500 kg. That makes about 11, 18 and 29 kW. It carries a stone separator, a magnetic plate at the inlet and a frequency drive. The MRE-60 handles up to 60 packs per minute, in 100, 250 and 500 g, in pillow, flat-bottom or vacuum pouches, with a single operator. The silos are custom-made, in carbon steel or stainless steel, cylindrical in shape so that the ground coffee does not stagnate in corners.
What you gain
The flame burns in a separate furnace, outside the chamber. It therefore cannot scorch the surface of the bean, as a bare flame does when the charge is too small. The hot air, for its part, carries heat to the whole surface of the bean at the same time. This is what makes a 720 kg batch in 12 minutes arithmetically tenable: 720 kg in 12 minutes makes exactly the announced 3,600 kg per hour. On the Black Gold, the announced 480 kg per hour corresponds to 120 kg in 15 minutes. This value falls well within the published range of 12 to 18 minutes. The chamber under negative pressure sends fumes and chaff to the chimney instead of the workshop. The chaff therefore does not toast on a hot wall, which is a real source of smoke taste. Since the furnace accepts wood, chips and briquettes as much as gas, the plant adjusts to the cheapest fuel of the moment without changing roaster.
What you lose
Convection dominates, so conduction no longer marks the bean. A profile built on this machine does not transpose to a drum, where metal heats the coffee by contact. The smallest batch of the gas line is 240 kg, or four 60 kg sacks. Four sacks of the same lot must therefore be gathered to start a roast, which closes this line to microlots. Only the Black Gold, at 30 kg, comes down to the size of a specialty lot. A fluid bed requires an air velocity above that which puts the beans in suspension. Gas flow per kilo of coffee is therefore much higher than in a drum. Chimney, ventilation and fume treatment grow accordingly, and the heat leaving through the flue is lost for lack of any described recycling. Since no exchanger is described, the combustion gases themselves pass through the bed of beans. A badly adjusted fire or damp wood therefore puts its smoke in the cup. The manufacturer in fact writes that the furnace eliminates smoke in the combustion chamber, which amounts to admitting there is smoke to eliminate. Finally, wood imposes a fuel whose moisture and calorific value vary from one delivery to the next. Input power is therefore not constant, and the curve has to be caught up on the fly.
Gray areaEverything above comes from the manufacturer, through its website or its LinkedIn page. No genuinely independent source could be consulted: no company register, no CNPJ number, no trade press, no patent. The website does not publish its CNPJ, not even in its privacy policy. The year 2001 therefore rests on the website's timeline alone, which the LinkedIn page repeats without establishing it. The founders are identified there only by their first names, Marcos and Marcelo, with no family name. The timeline places the launch of the MRE-60 in the same year as the founding, which is confirmed nowhere else and remains surprising for a first product. The headcount, for its part, is given three times and three different ways. The timeline announces 70 professionals in 2026. The block of counters on the same page announces more than 100. The company's LinkedIn page declares a bracket of 11 to 50 employees. None of these three figures can be retained, and the sheet retains none of them. The roasting times also differ from one page to another. The Master line is given as 12 to 20 minutes on one page, 12 to 15 on another. The Black Gold is given as 15 to 30 minutes on one page, 12 to 18 on another. None of these values can be retained as the right one. The website also blurs the identity of the two lines. The table on the Master sheet labels as Black Gold the line that gives 240, 480 and 720 kg per cycle. Yet the Black Gold sheet itself announces 30, 60 and 120 kg. The website, moreover, never writes that the Master line and the gas roaster are the same machine: the capacities match, but the equivalence remains a deduction. The same Master sheet announces a range of 100 to 3,600 kg per hour. Yet the smallest batch published for this line is 240 kg, and 100 kg per hour corresponds to no batch in the catalog. The expression fluidized bed is the manufacturer's own wording, not a verified fact. No diagram, no air speed, no bed height is published. It is therefore impossible to say whether it is a true fluidized bed, in which the bean is held in suspension, or a strongly convective chamber with mechanical stirring. Nothing indicates either that a heat exchanger separates the combustion gases from the coffee. The sheet reasoned on the assumption that there is none, for lack of the slightest mention. The claim that the machine eliminates acrylamide, a carcinogenic substance, is supported by no measurement, no laboratory, no cited standard. Acrylamide forms during roasting itself, so such a claim would require a published assay. The announced gain of 3 percent per bag over drum roasters is given with no protocol, no named comparison machine and no measurement. The Latin American countries reached since 2020 are not named, and no export figure is published. The public catalog counts seven products and shows no conveyor, no transport screw and no elevator. The LinkedIn page, for its part, lists conveyors among the company's products. The idea of a complete line delivered in one piece, coffee handling included, therefore cannot be verified. No thermal power in kilowatts, no airflow, no weight, no footprint, no chimney or afterburner requirement is published. The real installation cost therefore cannot be deduced. The website writes Artsan where the software is called Artisan, and documents no communication protocol. How the machine talks to Artisan and Cropster is therefore not established. The sheet for the furnace limits the fuels in its table to wood, briquette and wood chips, whereas the body text adds gas and diesel. Finally, nothing is published on the existence of a maintenance network outside Latin America.
Manufacturer's website, siatecbrasil.com.br, Quem Somos page, timeline, accessed September 2026 (founding in 2001 by Marcos and Marcelo for machine automation, launch of the reprocessing machines including the MRE-60 in 2001, broadening of the service portfolio in 2005 with consulting, technical assistance and retrofit, automated blade-and-screen mill in 2013, Siatec roaster with roasting chamber and fluidized bed in 2014 with the reason given, to move away from the cylinder judged wearing and inefficient, international expansion in Latin America in 2020, rounded silos in 2023, 4,000 m² factory and 70 professionals in 2026); same page, counter block (more than 20 years of experience, more than 100 professionals, more than 1,000 clients); siatecbrasil.com.br, Produtos page, seven product sheets with their headline figures (Master line up to 3,600 kg per hour, mill up to 1,500 kg per hour, MRE-60 at 60 packs per minute, Black Gold line up to 480 kg per hour), accessed September 2026; siatecbrasil.com.br, Torradores de Alto Desempenho sheet, Master line (capacity from 100 to 3,600 kg per hour, roasting chamber with fluidized bed under negative pressure, unique curves with two independent furnaces, cycle of 12 to 20 minutes for the Master and 15 to 30 minutes for the Black Gold, per-cycle capacity line labeled Black Gold but giving 240 kg or 4 bags, 480 kg or 8 bags and 720 kg or 12 bags, mention eliminates acrylamide, a carcinogenic substance, announced yield 3 percent higher per bag than drum roasters); siatecbrasil.com.br, Torrador à gás sheet (240, 480 and 720 kg per cycle, 12 to 15 minutes in the table and 12 to 20 minutes in the text, fluidized bed, natural gas or LPG, touchscreen, Artsan and Cropster, stainless steel and polyurethane paint); siatecbrasil.com.br, Torradores para linha de café especial black gold sheet (30, 60 and 120 kg per cycle, 12 to 18 minutes, single furnace, large-diameter screen cooling tray, bottom extractor drawing ambient air through the bed of beans, stainless steel and epoxy paint, Artsan and Cropster); siatecbrasil.com.br, Fornalha ecológica sheet (carbon steel or stainless steel, refractory brick, fuels natural gas, LPG, wood, wood chips, briquette or diesel in the body text but only wood, briquette and wood chips in the table, stainless steel particle collector at the chimney outlet, oxygen flow regulated by an ambient-air extractor, announced compatibility with all drum roasters on the market); siatecbrasil.com.br, MRE-60 SIATEC sheet (60 packs per minute, 100, 250 and 500 g formats, pillow bags, flat-bottom and vacuum, a single operator, separation of the ground coffee and the packaging without manual contact); siatecbrasil.com.br, Moagem à lâmina automatizado sheet (MMS mill, 15 hp for 350 kg per hour, 25 hp for 900 kg per hour, 40 hp for 1,500 kg per hour, rotor, self-cleaning screen while running, frequency drive with acceleration ramps, stone separator, magnetic plate at the hopper, acoustic insulation); siatecbrasil.com.br, Silos de armazenagem sheet (custom capacities, carbon steel or stainless steel, cylindrical shape against retention in corners); siatecbrasil.com.br, Serviços page (consulting on a new plant or adaptation of an existing plant, technical assistance, equipment overhaul, industrial automation); siatecbrasil.com.br, home page and footer (Av. Miguel Aiello, 505, Jardim Regina, Araraquara, São Paulo, 14808-125, telephone 16 3333-8040), accessed September 2026; the company's LinkedIn page, linkedin.com/company/siatec-brasil, accessed September 2026 (same address, sector mechanical and industrial engineering, privately held company, declared headcount bracket of 11 to 50 employees)